Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
RadonLithiumBicarbonates
Discover the Ramsar Thermal Springs, a natural wonder located on the shores of the Caspian Sea in Iran's Mazandaran region. The springs are known for their notably high radon levels, a remarkable geological feature. Visitors can relax and rejuvenate in the warm, mineral-rich waters. The area offers stunning views of the surrounding landscape.
Insider tip — Ramsar is internationally renowned in radiation science as the location of some of the highest natural background radiation levels on Earth, produced by radium-rich spring water that has deposited radioactive travertine throughout the town. The thermal springs along the Caspian coast have supplied elegant resort hotels since the Qajar dynasty, when Ramsar served as Iran's Monaco. Researchers continue to study the local population for evidence of radiation hormesis, as inhabitants show no elevated cancer rates despite the high exposure. The combination of Caspian coastal scenery and spa heritage makes Ramsar unique among Iranian resort towns.