Cinder Room
On the sheltered flank, with the cliff two metres from the glass and a skylight over the bed. The quietest grade of room in the building, and the darkest at midday.
- Floor area28 m²
- BedQueen
- GuestsUp to 2
A casino resort built on a lava bench
Obsidian Shore
Forty-four keys behind basalt walls, a beach of coarse black sand, three geothermal pools cut into the rock shelf, and the Caldera Hall casino floor with its windows open to the water. The surf is loud here. That is the point.
18+Caldera Hall is a land-based casino floor for adults aged 18 and over. Photo ID is checked at the door on every visit.
The shore
A resort quarried out of its own coastline
The land here is young. A flow came down the valley long before anyone kept records, reached the sea and stopped in a wide black shelf that the waves have been grinding into sand ever since. Nothing would grow on it, which is why nobody built here for a century.
When the resort went up, the builders took the stone from a quarry eleven kilometres inland and left it rough: load-bearing basalt inside and out, laid in long courses, cold to the hand in the morning and warm by four in the afternoon. The bores that heat the water came later, and they run the pools, the underfloor loops and the laundry.
What stands on the bench now is a casino hotel of forty-four keys. Breakfast is served facing the surf. The kitchens buy off two boats. From four in the afternoon Caldera Hall opens for adults, and the sound of the room competes with the sound of the water until the small hours.
All of it happens on the premises, in person. This website is a description of a building on a beach: it runs no online casino games, accepts no bets and handles no money.
- Keys
- 44 rooms & suites
- Casino floor
- Caldera Hall · 18+
- Kitchens
- Four, counter to cliff
- Hot water
- Three geothermal pools
- Reception
- Staffed around the clock
- Season
- Open every month
Rooms
Four ways to sleep above black sand
Every key has a deep window seat, blackout shutters that actually seal, a basalt washstand and a kettle with proper loose tea. Floor areas are measured to the inside of the stone.
Tideline Room
Square onto the beach, one floor up, with a sliding wall of glass and a ledge wide enough to sit on. On a big swell the spray reaches the rail. Earplugs are in the drawer if you want them.
- Floor area35 m²
- BedKing
- GuestsUp to 2
Basalt Suite
The south corner of the second floor: a sitting room with two aspects, a bath cut from a single block of stone, and a private step down to the warm pool before the terraces open to everyone.
- Floor area62 m²
- BedKing + daybed
- GuestsUp to 3
Lavafield Loft
The whole west end of the top floor, with two bedrooms, a long kitchen bench, a wood burner for the wet months and a roof deck that looks inland over the old flow.
- Floor area110 m²
- BedroomsTwo
- GuestsUp to 4
Drag, swipe or tab into the strip and use the arrow keys to see all four room types.
Caldera Hall · 18+
The casino floor faces the water
Caldera Hall takes up the seaward end of the ground floor, one long room under a vaulted basalt ceiling with eleven windows onto the beach. The tables sit along the glass; the slot bank is set back in the warm half of the room, behind a low stone screen. There is a casino bar at the inland end, and a door straight out to the sand for anyone who needs five minutes of cold air.
It is a working casino, not a backdrop. Our casino hosts deal, watch the room and teach, and most of them will happily walk a first-timer through a game at an empty table before the evening fills up. Chips are bought at the cage; cards and dice are checked on camera at the start of every shift.
This is a land-based casino inside the hotel, open to adults who come here in person. Nothing on this website is a casino game. There are no bets to place here, no deposits to make and no payments of any kind.
- Roulette, two wheels
- Blackjack, four tables
- Three-card poker
- Punto banco
- Slot bank, sixty machines
- Casino hosts on every shift
House rules of Caldera Hall
- Admission starts at 18, or at the higher age where local rules set one.
- Photo ID is checked at the casino door on every visit, whatever age a visitor looks.
- Agree a time or a spending limit with a host before you sit down and the floor team will enforce it.
- A break of a week, a month or a year can be arranged in confidence at the cage.
- No credit is given anywhere in the resort, and there is no cash machine on the casino floor.
- Phones stay off the tables and photographs are not taken in the hall, out of respect for other guests.
Open daily 16:00 until 04:00
Kitchens
Four places to eat, one of them on stilts
Two boats land at the slipway most mornings. Whatever they bring decides half of the dinner menu, which is written by hand at about eleven o'clock.
Saltstone
Built out over the rocks on steel legs, so the swell is under the floor. Grilled fish, shellfish from the cold channel, a short list of white wine and one very good cider. Twenty-eight covers; book ahead if you want the corner.
Driftglass
The glazed room above the dunes. Breakfast runs until half past ten: skyr, cured fish, rye toast and eggs cooked to order. From noon there are two hot plates, a soup and a salad counter that changes weekly.
Fumarole
A small dark room beside the casino entrance, with a steam-vent map on the wall and bar stools facing the sea. Smoked spirits, a serious bitters shelf, and five mixed drinks with no alcohol in them that are not an afterthought.
Ashbread
Rye baked slowly in the geothermal oven under the terrace, pulled out at seven and again at ten. Cinnamon buns, butter by the slab, and coffee in a paper cup to take down to the water.
The week
What happens, and when
The same seven evenings run all year. Residents and visitors are equally welcome at all of them; three need a table booked at reception.
Monday
Low-water walk
A guide takes a dozen people out along the bench at the bottom of the tide, to the pools where the flow met the sea. Boots are lent at the door.
Tuesday
Boat-table dinner
One long table at Saltstone, one menu, built from whatever the second boat brought in. Four courses, no choices, finished by half past nine.
Wednesday
First Hand — casino beginners' evening
Two hosts open a slow table in Caldera Hall and teach roulette, blackjack and punto banco from the start. Nobody is expected to stake anything and nobody is talked into sitting down. Adults 18 and over only, photo ID at the door.
Thursday
Night bathing
The terraces stay open late with the lamps turned down to almost nothing. Towels are stacked at the top of the steps and the bar sends down a tray at ten.
Friday
Brass on the sea deck
Six players, no amplification, loud enough to beat the surf. If the weather turns they move inside to the stone hall and it sounds even better.
Saturday
Fire pit on the black sand
A pit dug below the high-water mark, mussels in a sheet-iron pan, bread from the morning bake and a long argument about the best route up the valley.
Sunday
Long Sunday at Saltstone
Lunch that starts at half past twelve and gives up somewhere around four. Shared plates, a whole baked fish per table, and a cellist from the village after two.
Winter storms occasionally move the outdoor evenings indoors at short notice. Reception posts the week on the board by the lift.
Steam terraces
Hot water, cold water, bare stone
Behind the kitchens, a flight of steps drops onto three terraces cut into the lava shelf. Each holds a pool at a different temperature, fed straight from the bore and cooled by air alone, so the water smells faintly of minerals and leaves your skin feeling scrubbed.
There is no music down there and no screens. Phones are asked to stay in the lockers at the top of the steps, which is the only rule anybody bothers to enforce.
Three pools34°C, 38°C and 41°C, open 06:30 – 22:00
Steam caveCut into the basalt, held at 45°C
Cold channelFiltered seawater, whatever the ocean is doing
Dawn swimGuided, twenty minutes, 06:45 in summer
Good to know
Before you drive down the valley
Arrival
Rooms open at 15:00 and we ask for keys back by 11:00. The road in is single-track for the last three kilometres and unlit, so tell us if you expect to arrive after midnight. Bags can sit at reception on either side of a stay.
Children
Children are welcome in the rooms, in all four kitchens and in the 34°C pool during family hours. Caldera Hall is closed to anyone under 18 at every hour of the day, including children with a parent beside them, and Fumarole is adults only after 21:00.
Access
A level route runs from the car park through reception to Driftglass, Caldera Hall and the first terrace, where a hoist reaches the warm pool. Three rooms are adapted, with roll-in showers and wide doors. The beach itself is loose sand and hard going; say the word and we will bring a chair with balloon tyres.
18+
Find support
Where we stand on responsible gaming
An evening in Caldera Hall should cost you what you decided it would cost and nothing else. Tell a host your limit and they will hold the line for you, arrange a break, or sign a confidential self-exclusion that we will not shorten however well you argue it later. They can also hand you the details of an independent support service at any hour of the night.
Questions
What people ask us first
Is this an online casino?
No. Obsidian Shore is a hotel with a land-based casino floor inside it, and this website is a description of that building. There are no online casino games here, no wagers are accepted, and no deposit, withdrawal or payment of any kind is processed on these pages.
Who is allowed into Caldera Hall?
Anybody of 18 and upwards, and older again in places whose own rules set a higher floor. A passport, national ID card or driving licence is checked at the door on every visit. Entry is refused without discussion if the document is missing, borrowed or unreadable.
Do I have to be staying here to use the casino?
No. Caldera Hall, all four kitchens and most evenings in the week are open to people who are not resident, subject to the age check and to how busy the room is that night.
Is the resort suitable for a family?
Yes, with one firm exception. Children have the rooms, the kitchens, the black sand and the warm pool at family hours. The casino floor is not open to them under any circumstances, and we do not make exceptions for a quick look at the roulette wheel.
Can a host set a limit with me?
It is a routine request and no host will blink at it. Say your figure or your finishing time at the cage before you start, and the floor team will come and tell you when you have reached it. Longer breaks and written self-exclusions are arranged the same way.
How rough does the sea get?
Rough enough that swimming off the beach is a bad idea for most of the year. The cold channel on the lower terrace is fed from the sea and sheltered, which is where people actually swim. Warning flags go up on the dune path when the swell is dangerous.
Can you take a private party?
The stone hall seats fifty-five for dinner and the sea deck works for about thirty standing. Write to us with your dates and numbers and we will tell you honestly whether the weather makes the deck a gamble that week.
Contact
Write to us with your dates
Tell us when you would like to come, which grade of room you have in mind and anything that would make the stay work better: a cot, a quiet corner, a late arrival down the valley road, a table at Saltstone on the Tuesday. Reception replies by email, generally before the day is out.
Email reception- [email protected]
- Address
- Obsidian Shore Casino Resort, Lava Bench Road, Black Sand Bay
- Caldera Hall
- Daily 16:00 – 04:00 · adults 18+ with photo ID
- Reception
- Staffed 24 hours, every day of the year