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The green forest on the floor of the Jomblang sinkhole seen from the mouth of the tunnel

Jomblang Cave Tours & Tickets

Every trip worth taking to Jomblang and around Yogyakarta — compared, priced and bookable in a couple of taps.

Jomblang is awkward to reach on your own, runs once a day and has limited places, so almost everyone visits on a tour or with a driver from Yogyakarta. The real choice is what to combine it with: nothing at all, an afternoon of cave tubing at Pindul, the gondola at Timang Beach, a volcano sunrise beforehand or a temple afterwards.

Everything below is booked through GetYourGuide, which means live availability, free cancellation on most options and reserve-now-pay-later on many. Prices are indicative “from” amounts in US dollars. One thing to check on every listing: whether the Jomblang entrance fee is included. Many of the cheapest prices cover transport and a driver-guide only, with the cave fee paid in cash on arrival.

Pick by the kind of day you want

Jomblang Cave, with or without Pindul

The cave on its own if you want an unhurried day; with Pindul’s underground river if you want the classic Gunungkidul pairing.

Ropes running down the green, overgrown wall of the Jomblang sinkhole Full-day adventure from $17
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (1,071)

Yogyakarta: Jomblang Cave and Pindul Cave Adventure Trip

The classic Gunungkidul day and the most-booked Jomblang tour on GetYourGuide, with more than a thousand reviews. You leave Yogyakarta early, are lowered into the sinkhole, walk the tunnel to Grubug Cave for the light of heaven, then drive on to Pindul for an easy float along its underground river. Check on the listing whether the cave entrance fees are included in the option you choose.

  • Rope descent into Jomblang and the walk to the light beam
  • Float through Pindul Cave on an inner tube in the afternoon
  • Hotel pickup and lunch — by far the most-reviewed Jomblang tour
The shaft of sunlight known as the light of heaven falling into Grubug Cave at Jomblang Cave tour from $30
🕒 About 4 hours at the cave, plus the drive 📍 From Yogyakarta (hotel pickup) ⭐ 4.8 (80)

Yogyakarta: Jomblang Cave Tour

A straightforward return trip to Jomblang: pickup, the drive into the karst hills, the descent, the forest, the tunnel and the light, then back to the city by mid-afternoon. It suits travellers who would rather not rush on to a second stop, or who want the afternoon free for Prambanan or a rest.

  • A day built around the cave and nothing else
  • Timed for the late-morning light beam
  • Long-running listing with a steady 4.8 rating
A visitor in helmet and harness on the rope beside the limestone wall of Jomblang Cave Cave tour from $22
🕒 About 7 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (62)

Yogyakarta: The Jomblang Cave Adventure Trip

A well-reviewed trip focused on Jomblang alone, with transport and a meal. The driver times the departure so you are registered and geared up before the descents start, and you are usually back in Yogyakarta in the mid-afternoon.

  • Door-to-door transfer from your hotel
  • Guided descent, ancient forest and Grubug Cave
  • A meal is included according to the listing
Daylight pouring through a hole in the roof of Pindul Cave above the underground river Full-day adventure from $14
🕒 11–13 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (345)

Yogyakarta: Jomblang & Pindul Cave Guided Adventure

A long-established alternative to the bestseller with the same shape of day: Jomblang in the morning for the light, Pindul tubing after lunch. The low starting price generally covers transport and guiding; read the listing carefully for what is and is not included, as the Jomblang entrance fee is often paid at the cave.

  • Both caves with a guide and driver
  • Shared or private option
  • One of the lowest headline prices, with hundreds of reviews
Sunlight falling down the tall shaft of Grubug Cave at Jomblang Shared tour from $10
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (17)

Jomblang and Pindul Cave Shared Group Tour from Yogyakarta

The cheapest way to do the two caves with a driver: a shared car with other travellers. The day follows the usual order — Jomblang for the late-morning light, then Pindul and the Oyo River. A good choice for solo travellers who would otherwise pay for a whole car.

  • Share the car and the cost with other travellers
  • Jomblang descent, Pindul tubing and a jump spot on the Oyo River
  • Traditional lunch according to the listing

Big combination days

Add the Timang gondola, a Merapi sunrise, Kalisuci’s wilder river or an afternoon at Prambanan. Long days, but efficient if your time in Yogyakarta is short.

A passenger in the hand-pulled gondola above the surf at Timang Beach, with the rope crew on the cliff Full-day adventure from $26
🕒 About 9 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (3)

Yogyakarta: Jomblang Cave, Timang Beach Jeep & Gondola Tour

The two most adrenaline-heavy stops in Gunungkidul in one day. After Jomblang you drive to the coast, swap to a jeep for the rough track to Timang, and can ride the hand-pulled wooden gondola over the waves to the rock island. Gondola and bridge tickets are often paid on the spot — check the listing.

  • The cave in the morning, the Indian Ocean in the afternoon
  • Off-road jeep ride down to Timang
  • Cross to the rock island by gondola or suspension bridge
The summit cone of Mount Merapi above green lower slopes Full-day adventure from $17
🕒 12–13 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.9 (233)

Yogyakarta: Mt. Merapi Sunrise, Jomblang & Pindul Cave Tour

Volcano, vertical cave and underground river in a single very long day. You start before dawn for sunrise near Merapi, cross the province to Jomblang in time for the light, and end floating through Pindul. It is tiring but efficient, and it is one of the best-reviewed combinations on the market.

  • Sunrise on the slopes of Java’s most active volcano
  • Jomblang’s light beam at midday
  • Pindul cave tubing to finish, with a meal included
Mount Merapi on the horizon beyond a green rice field near Yogyakarta Full-day adventure from $15
🕒 9–15 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (94)

Yogyakarta: Jomblang, Pindul Cave & Merapi Lava Viewpoint

For people with one spare day and a lot of energy: the two Gunungkidul caves, then north to a viewpoint on the flank of Mount Merapi. Whether you see glowing lava depends entirely on the volcano’s activity and the weather on the night, so treat it as a bonus rather than a promise.

  • Two caves by day, the volcano after dark
  • Flexible viewpoint options for Merapi
  • Private option available
Mount Merapi seen from the Klangon viewpoint on its southern slope Small-group day tour from $85
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.8 (42)

Yogyakarta: Mt Merapi, Jomblang Cave & Timang Beach Day Tour

A fuller-service day that strings together sunrise at Merapi, the Jomblang descent and the Timang gondola with a small group, transfers and lunch. It costs noticeably more than the budget cave tours; compare what each includes before deciding.

  • Merapi sunrise, Jomblang descent and Timang gondola
  • Small group with hotel transfer and lunch
  • Higher price, but more is included
The towers of the Prambanan temple compound seen from the north Small-group day tour from $32
🕒 About 12 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (1)

Yogyakarta: Jomblang Cave Adventure & Prambanan Afternoon

Prambanan lies on the east side of Yogyakarta, roughly on the way back from Gunungkidul, so the cave and the Hindu temple compound fit together well. A newer listing with few reviews so far, but a sensible pairing if you are short on days.

  • Nature in the morning, a UNESCO temple in the afternoon
  • Prambanan in the softer late-day light
  • Small group
Small fields between rocky limestone hills in the Gunungkidul karst Small-group day tour from $28
🕒 About 12 hours 📍 From Yogyakarta (hotel pickup)

Jomblang Cave & Kalisuci River Tubing with Kopi Luwak Tour

Kalisuci belongs to the same underground river system as Grubug Cave, and tubing it means floating through short cave passages and a jungle gorge with far fewer visitors than Pindul. This is a new listing with no reviews yet, and Kalisuci closes when the river is high, so it is a dry-season choice.

  • Kalisuci, the wilder cave-tubing river a few kilometres from Jomblang
  • Far fewer people than Pindul
  • Coffee stop on the way back

Gunungkidul without the rope

Cave tubing, waterfalls and the coast for anyone who would rather not be lowered into a sinkhole.

The gondola frame and ropes above the sea, with the rock island beyond, at Timang Beach Private day tour from $46
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (2)

Yogyakarta: Pindul Cave Tubing & Timang Beach Gondola Ride

A private Gunungkidul day for people who do not fancy being lowered 60 metres on a rope: gentle tubing at Pindul and on the Oyo River, then the coast and the Timang gondola. It also works as a second day in the area after you have done Jomblang.

  • Pindul Cave and Oyo River tubing
  • Jeep ride and the gondola at Timang
  • No rope descent — a Jomblang-free Gunungkidul day

Yogyakarta essentials

Borobudur and Prambanan, the Ramayana Ballet, the Merapi jeep tour, the sultan’s palace — and a private car for building your own day.

The bell-shaped stupas of Borobudur at sunrise Temple tour from $17
🕒 6–11 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.9 (2,278)

Yogyakarta: Borobudur Sunrise (Guaranteed Climb-up) & Prambanan

The most-reviewed temple tour from Yogyakarta, with well over two thousand reviews. Access to the upper terraces of Borobudur is rationed by a daily quota with timed slots, and this tour’s selling point is handling that for you. Entrance tickets for foreign visitors are a significant extra — check exactly what your option includes.

  • Sunrise near Borobudur, then onto the monument itself
  • Help securing a climb-up slot under the daily quota
  • Optional Prambanan in the same day
Dancers in costume performing the Ramayana ballet on the open-air stage at Prambanan Evening show from $19
🕒 2–8 hours, depending on option 📍 From Prambanan / Yogyakarta ⭐ 4.7 (126)

Yogyakarta: Ramayana Ballet at Prambanan

The Ramayana told in Javanese dance, on a stage beside Prambanan. In the dry months the show is usually held outdoors with the temple towers lit behind the dancers; at other times it moves to an indoor theatre. An easy evening after a morning in the cave.

  • Javanese dance-drama with a live gamelan orchestra
  • Open-air stage with the temple floodlit behind it in the dry season
  • Optional afternoon temple visit and hotel pickup
Visitors sitting on a red open-top jeep on the Merapi lava tour, with the volcano behind Jeep tour from $30
🕒 About 3 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.7 (563)

Yogyakarta: Mount Merapi Sightseeing Jeep Tour with Pickup

Merapi’s “lava tour” is a bumpy, dusty jeep ride across the valleys buried by the 2010 eruption, with stops at a house-museum of melted belongings and viewpoints towards the crater. With over five hundred reviews, this is the standard way to do it from the city.

  • Open 4×4 on the lava fields of the 2010 eruption
  • The small “remains” museum and the Kaliadem bunker area
  • Sunrise or daytime departures
The bathing pool and fountains of the Taman Sari water castle in Yogyakarta Walking tour from $16
🕒 1.5–4 hours 📍 From Yogyakarta city centre ⭐ 4.8 (61)

Yogyakarta: Sultan’s Palace and Water Castle Guided Tour

A compact introduction to royal Yogyakarta on foot: the sultan’s palace, the 18th-century water castle and the lanes between them, with a guide who can explain the city’s north–south “cosmological axis”. Fits neatly into the morning after your cave day.

  • The Kraton, still the home of the sultan
  • Taman Sari’s pools, tunnels and underground mosque
  • Small group with a local guide
The white Tugu monument at a crossroads in central Yogyakarta Private transport from $40 per group
🕒 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (9)

Yogyakarta: Private Car Hire with Driver for 10 Hours

The flexible option: a car and driver for ten hours, to go where you like. It is the simplest way to reach Jomblang independently and add Nglanggeran, a beach or Sri Gethuk on the way back. You pay entrance fees yourself, including the Jomblang fee at the cave.

  • Your own car and English-speaking driver
  • Build your own Gunungkidul route
  • Priced per car, not per person
Live availability

Book now — real-time prices

Straight from GetYourGuide, updated continuously.

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The full list

Every Jomblang and Yogyakarta tour we recommend

Nineteen experiences we would happily book ourselves, from a shared-car cave day to a private driver for your own route.

Ropes running down the green, overgrown wall of the Jomblang sinkhole Full-day adventure from $17
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (1,071)

Yogyakarta: Jomblang Cave and Pindul Cave Adventure Trip

The classic Gunungkidul day and the most-booked Jomblang tour on GetYourGuide, with more than a thousand reviews. You leave Yogyakarta early, are lowered into the sinkhole, walk the tunnel to Grubug Cave for the light of heaven, then drive on to Pindul for an easy float along its underground river. Check on the listing whether the cave entrance fees are included in the option you choose.

  • Rope descent into Jomblang and the walk to the light beam
  • Float through Pindul Cave on an inner tube in the afternoon
  • Hotel pickup and lunch — by far the most-reviewed Jomblang tour
The shaft of sunlight known as the light of heaven falling into Grubug Cave at Jomblang Cave tour from $30
🕒 About 4 hours at the cave, plus the drive 📍 From Yogyakarta (hotel pickup) ⭐ 4.8 (80)

Yogyakarta: Jomblang Cave Tour

A straightforward return trip to Jomblang: pickup, the drive into the karst hills, the descent, the forest, the tunnel and the light, then back to the city by mid-afternoon. It suits travellers who would rather not rush on to a second stop, or who want the afternoon free for Prambanan or a rest.

  • A day built around the cave and nothing else
  • Timed for the late-morning light beam
  • Long-running listing with a steady 4.8 rating
The bell-shaped stupas of Borobudur at sunrise Temple tour from $17
🕒 6–11 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.9 (2,278)

Yogyakarta: Borobudur Sunrise (Guaranteed Climb-up) & Prambanan

The most-reviewed temple tour from Yogyakarta, with well over two thousand reviews. Access to the upper terraces of Borobudur is rationed by a daily quota with timed slots, and this tour’s selling point is handling that for you. Entrance tickets for foreign visitors are a significant extra — check exactly what your option includes.

  • Sunrise near Borobudur, then onto the monument itself
  • Help securing a climb-up slot under the daily quota
  • Optional Prambanan in the same day
A visitor in helmet and harness on the rope beside the limestone wall of Jomblang Cave Cave tour from $22
🕒 About 7 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (62)

Yogyakarta: The Jomblang Cave Adventure Trip

A well-reviewed trip focused on Jomblang alone, with transport and a meal. The driver times the departure so you are registered and geared up before the descents start, and you are usually back in Yogyakarta in the mid-afternoon.

  • Door-to-door transfer from your hotel
  • Guided descent, ancient forest and Grubug Cave
  • A meal is included according to the listing
The summit cone of Mount Merapi above green lower slopes Full-day adventure from $17
🕒 12–13 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.9 (233)

Yogyakarta: Mt. Merapi Sunrise, Jomblang & Pindul Cave Tour

Volcano, vertical cave and underground river in a single very long day. You start before dawn for sunrise near Merapi, cross the province to Jomblang in time for the light, and end floating through Pindul. It is tiring but efficient, and it is one of the best-reviewed combinations on the market.

  • Sunrise on the slopes of Java’s most active volcano
  • Jomblang’s light beam at midday
  • Pindul cave tubing to finish, with a meal included
Visitors sitting on a red open-top jeep on the Merapi lava tour, with the volcano behind Jeep tour from $30
🕒 About 3 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.7 (563)

Yogyakarta: Mount Merapi Sightseeing Jeep Tour with Pickup

Merapi’s “lava tour” is a bumpy, dusty jeep ride across the valleys buried by the 2010 eruption, with stops at a house-museum of melted belongings and viewpoints towards the crater. With over five hundred reviews, this is the standard way to do it from the city.

  • Open 4×4 on the lava fields of the 2010 eruption
  • The small “remains” museum and the Kaliadem bunker area
  • Sunrise or daytime departures
A passenger in the hand-pulled gondola above the surf at Timang Beach, with the rope crew on the cliff Full-day adventure from $26
🕒 About 9 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (3)

Yogyakarta: Jomblang Cave, Timang Beach Jeep & Gondola Tour

The two most adrenaline-heavy stops in Gunungkidul in one day. After Jomblang you drive to the coast, swap to a jeep for the rough track to Timang, and can ride the hand-pulled wooden gondola over the waves to the rock island. Gondola and bridge tickets are often paid on the spot — check the listing.

  • The cave in the morning, the Indian Ocean in the afternoon
  • Off-road jeep ride down to Timang
  • Cross to the rock island by gondola or suspension bridge
Daylight pouring through a hole in the roof of Pindul Cave above the underground river Full-day adventure from $14
🕒 11–13 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (345)

Yogyakarta: Jomblang & Pindul Cave Guided Adventure

A long-established alternative to the bestseller with the same shape of day: Jomblang in the morning for the light, Pindul tubing after lunch. The low starting price generally covers transport and guiding; read the listing carefully for what is and is not included, as the Jomblang entrance fee is often paid at the cave.

  • Both caves with a guide and driver
  • Shared or private option
  • One of the lowest headline prices, with hundreds of reviews
Dancers in costume performing the Ramayana ballet on the open-air stage at Prambanan Evening show from $19
🕒 2–8 hours, depending on option 📍 From Prambanan / Yogyakarta ⭐ 4.7 (126)

Yogyakarta: Ramayana Ballet at Prambanan

The Ramayana told in Javanese dance, on a stage beside Prambanan. In the dry months the show is usually held outdoors with the temple towers lit behind the dancers; at other times it moves to an indoor theatre. An easy evening after a morning in the cave.

  • Javanese dance-drama with a live gamelan orchestra
  • Open-air stage with the temple floodlit behind it in the dry season
  • Optional afternoon temple visit and hotel pickup
The gondola frame and ropes above the sea, with the rock island beyond, at Timang Beach Private day tour from $46
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (2)

Yogyakarta: Pindul Cave Tubing & Timang Beach Gondola Ride

A private Gunungkidul day for people who do not fancy being lowered 60 metres on a rope: gentle tubing at Pindul and on the Oyo River, then the coast and the Timang gondola. It also works as a second day in the area after you have done Jomblang.

  • Pindul Cave and Oyo River tubing
  • Jeep ride and the gondola at Timang
  • No rope descent — a Jomblang-free Gunungkidul day
Mount Merapi on the horizon beyond a green rice field near Yogyakarta Full-day adventure from $15
🕒 9–15 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (94)

Yogyakarta: Jomblang, Pindul Cave & Merapi Lava Viewpoint

For people with one spare day and a lot of energy: the two Gunungkidul caves, then north to a viewpoint on the flank of Mount Merapi. Whether you see glowing lava depends entirely on the volcano’s activity and the weather on the night, so treat it as a bonus rather than a promise.

  • Two caves by day, the volcano after dark
  • Flexible viewpoint options for Merapi
  • Private option available
Mount Merapi seen from the Klangon viewpoint on its southern slope Small-group day tour from $85
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup, before dawn) ⭐ 4.8 (42)

Yogyakarta: Mt Merapi, Jomblang Cave & Timang Beach Day Tour

A fuller-service day that strings together sunrise at Merapi, the Jomblang descent and the Timang gondola with a small group, transfers and lunch. It costs noticeably more than the budget cave tours; compare what each includes before deciding.

  • Merapi sunrise, Jomblang descent and Timang gondola
  • Small group with hotel transfer and lunch
  • Higher price, but more is included
The towers of the Prambanan temple compound seen from the north Small-group day tour from $32
🕒 About 12 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (1)

Yogyakarta: Jomblang Cave Adventure & Prambanan Afternoon

Prambanan lies on the east side of Yogyakarta, roughly on the way back from Gunungkidul, so the cave and the Hindu temple compound fit together well. A newer listing with few reviews so far, but a sensible pairing if you are short on days.

  • Nature in the morning, a UNESCO temple in the afternoon
  • Prambanan in the softer late-day light
  • Small group
Sunlight falling down the tall shaft of Grubug Cave at Jomblang Shared tour from $10
🕒 About 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 4.9 (17)

Jomblang and Pindul Cave Shared Group Tour from Yogyakarta

The cheapest way to do the two caves with a driver: a shared car with other travellers. The day follows the usual order — Jomblang for the late-morning light, then Pindul and the Oyo River. A good choice for solo travellers who would otherwise pay for a whole car.

  • Share the car and the cost with other travellers
  • Jomblang descent, Pindul tubing and a jump spot on the Oyo River
  • Traditional lunch according to the listing
The bathing pool and fountains of the Taman Sari water castle in Yogyakarta Walking tour from $16
🕒 1.5–4 hours 📍 From Yogyakarta city centre ⭐ 4.8 (61)

Yogyakarta: Sultan’s Palace and Water Castle Guided Tour

A compact introduction to royal Yogyakarta on foot: the sultan’s palace, the 18th-century water castle and the lanes between them, with a guide who can explain the city’s north–south “cosmological axis”. Fits neatly into the morning after your cave day.

  • The Kraton, still the home of the sultan
  • Taman Sari’s pools, tunnels and underground mosque
  • Small group with a local guide
Small fields between rocky limestone hills in the Gunungkidul karst Small-group day tour from $28
🕒 About 12 hours 📍 From Yogyakarta (hotel pickup)

Jomblang Cave & Kalisuci River Tubing with Kopi Luwak Tour

Kalisuci belongs to the same underground river system as Grubug Cave, and tubing it means floating through short cave passages and a jungle gorge with far fewer visitors than Pindul. This is a new listing with no reviews yet, and Kalisuci closes when the river is high, so it is a dry-season choice.

  • Kalisuci, the wilder cave-tubing river a few kilometres from Jomblang
  • Far fewer people than Pindul
  • Coffee stop on the way back
The white Tugu monument at a crossroads in central Yogyakarta Private transport from $40 per group
🕒 10 hours 📍 From Yogyakarta (hotel pickup) ⭐ 5.0 (9)

Yogyakarta: Private Car Hire with Driver for 10 Hours

The flexible option: a car and driver for ten hours, to go where you like. It is the simplest way to reach Jomblang independently and add Nglanggeran, a beach or Sri Gethuk on the way back. You pay entrance fees yourself, including the Jomblang fee at the cave.

  • Your own car and English-speaking driver
  • Build your own Gunungkidul route
  • Priced per car, not per person
Plan your Yogyakarta adventure

Stand in the light of heaven

Places in the cave are limited each morning. Compare the best-rated Jomblang tours from Yogyakarta, add Pindul, Timang Beach or the temples, and book in a couple of taps.

Good to know

Booking questions

Frequently asked questions

Is the Jomblang entrance fee included in tours?

Sometimes. Some options are all-inclusive; many of the cheapest cover transport and guide only, and you pay the cave fee (often quoted at around IDR 500,000) on site. Each listing spells out what is included — read it before confirming.

Which Jomblang tour is the best value?

The Jomblang and Pindul adventure trip has by far the most reviews — over a thousand, averaging 4.9 — at a low starting price. Solo travellers can save more with the shared-group version.

Do tours pick up from Yogyakarta hotels?

Yes, almost all include pickup from hotels in the city area, usually between about 6:00 and 7:00 for cave tours and before dawn for sunrise combinations.

What happens if it rains or the cave is closed?

If the cave operator closes for safety, tour providers normally offer an alternative date, a substitute programme or a refund under the listing’s terms. Cloud that hides the light beam is not usually grounds for a refund.

Can I book on the day?

Occasionally, in the quiet season. Because there is one session a day and a cap on numbers, booking at least a day or two ahead is much safer — and a week or more in July and August.