鬼岩温泉
Gifu
Sulfur springRadioactive spring
The water here
Sulfur spring 硫黄泉
The classic rotten-egg smell and milky white water. It can tarnish silver jewellery, so take it off.
Radioactive spring 放射能泉
Contains trace radon that leaves the water quickly. Also called radium or radon springs.
Read more
Japanese Wikipedia
Other towns in Gifu