Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Þvottahver — 'Laundry Spring' — is a geothermal hot spring in Iceland that was historically used by local farm women to wash clothes, the naturally warm and sometimes mildly alkaline geothermal water providing an effective laundering medium without the need for fire or fuel in an often treeless landscape. The practice of using hot springs for laundry was widespread across Iceland throughout the settlement period and well into the 20th century, and springs named Þvottahver are found in multiple locations across the country. This spring is a testament to the practical ingenuity of Icelanders in harnessing every resource of their extraordinary volcanic landscape.
Insider tip — Þvottahver — Laundry Spring — was historically used by local farmers who took advantage of its sustained hot temperature and gentle flow to wash clothes, a tradition attested in Icelandic farm records from the 18th and 19th centuries. Located in the Haukadalur geothermal complex near Geysir, the spring sits at a slightly lower temperature than the boiling vents nearby, making it well-suited for practical use. The name offers a rare window into the utilitarian relationship between Icelanders and their volcanic landscape. Today the site is preserved within the Geysir reserve and access for bathing is no longer permitted.
