Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Krauma Spa in Reykholt in the Vesturland region of Iceland is fed by Deildartunguhver — the highest-flow hot spring in Europe, producing 180 litres of boiling water per second at 100°C from a fissure in the volcanic landscape of the Reykholtsdalur valley — making Krauma's thermal supply the most geothermally powerful of any spa in the world by volume. The siliceous spring water is cooled and blended with cold spring water from the Rauðsgil glacier spring before filling six beautifully designed bathing pools of varying temperatures, plus a cold pool and steam room. The modern Scandinavian-influenced design of Krauma integrates naturally with the pastoral Icelandic landscape of the Dalir valley, and the proximity of the Snæfellsnes peninsula — with the glacier volcano of Snæfellsjökull immortalised by Jules Verne — provides a compelling broader destination.
Insider tip — Krauma Spa is fed by Deildartunguhver, Europe's highest-flow hot spring, which delivers boiling geothermal water just a few hundred metres away in the Reykholtsdalur valley of West Iceland. The facility cools this volcanic water to five calibrated pool temperatures, from a bracing cold river plunge to a relaxing 38 degrees Celsius main pool, framed by views over surrounding lava fields and birch woodland. The nearby medieval site of Reykholt, where the saga author Snorri Sturluson was assassinated in 1241, adds cultural depth to the visit. Book ahead in summer as capacity is deliberately kept intimate compared to the Blue Lagoon crowds.