Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Aguas Termales del Kokoro La Selva Resort is located in Sarapiqui, Heredia Province, Costa Rica. The sulfurous thermal water, at 41°C, feeds an indoor bath and a rotenburo-style outdoor bath, along with a sauna and massage services.
Insider tip — Kokoro La Selva Resort occupies the lower Caribbean slopes of Costa Rica's Central Volcanic Cordillera near Sarapiqui, where rainfall exceeds 4,000 mm annually and the forest is among the most biodiverse on Earth. The thermal waters emerge from the volcanic basement of Poas and Barva volcanoes, carrying light sulfurous minerals through thick rainforest terrain. Pools are landscaped to blend with the jungle canopy, and guests routinely spot toucans, poison-dart frogs, and sloths between soaks. The access road winds through pineapple plantations before climbing into primary forest, illustrating the remarkable transition from agriculture to wilderness in this part of Costa Rica.