Sulfur
The volcano crater is pretty good
Aso,JapanIn the eastern waters of Taiwan Province, China
Yilan County,TaiwanThere are many places in the world with hot springs
Baoshan,ChinaThe air is filled with the smell of sulfur, like rotten eggs
Myvatn,IcelandTracking karst landscape, appreciating Miao ethnic culture
Chongqing.,ChinaOn the other side of the sea is a volcano
Santorini,GreeceA relaxing spa journey to unwind in Austria
AustriaQuite hot! Austria has seven top-level thermal springs
Austria1