Volcano in Kawayu Onsen

This hissing mountain (512m), a couple of kilometres south of Kawayu Onsen, is stained sunshine-yellow in patches from sulphur. Locals steam eggs in the hot volcanic vapours for a speciality known as onsen-tamago. Chances are you'll hear the sellers calling 'Tamago! Tamago! Tamago!' (Eggs!) even before you reach the car park.