Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Montelago Hot Spring, also known as Pungao, is found on Mindoro Island in the Philippines. Its sulfurous thermal waters flow into an open-air natural pool, popular with travelers seeking a wild bathing spot amid tropical scenery.
Insider tip — Montelago Hot Spring (Pungao) on Mindoro island, Philippines — natural geothermal spring in the mountainous interior of one of the Philippines' larger islands. Mindoro's rugged highlands are home to the Mangyan indigenous peoples. Thermal spring in a biodiversity-rich tropical environment.