Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Las Hornillas Volcano Hot Spring, near Liberia in Guanacaste, Costa Rica, owes its heat to the nearby Rincón de la Vieja volcano. The sulfurous water, close to 44°C, is enjoyed in an open-air pool or as wild bathing.
Insider tip — Las Hornillas sits within the geothermal field of Rincon de la Vieja volcano in Guanacaste, Costa Rica, where boiling mud pots and fumaroles surround natural hot spring pools. The sulfurous waters reach high temperatures near the vents, and visitors must follow marked paths to soak safely in the cooler lower pools. The landscape of bubbling earth and cloud forest canopy makes this one of Central America's most dramatic thermal experiences.