Myoken Onsen Myoken Ishiharaso

Myoken Ishiharaso is a hot spring inn in Kareigawa, Hayato-cho, Kirishima City, Kagoshima Prefecture. It stands in the Myoken onsen area along the Amafuri River at the southern foot of the Kirishima volcanic zone, with its baths built close to the springs beside the river. Guest rooms include four rooms with private open-air baths in the Ishikura building, converted from early-Showa stone rice storehouses, and 14 rooms in the main building, four of which were renovated in 2023.

The water is a sodium-calcium-magnesium bicarbonate spring; the Amafurido source contains 2,264 mg of dissolved solids per kilogram. It is carbonated and every source on the property exceeds 200 mg of metasilicic acid. Seven on-site sources are used with no added water and no storage tank, drawn straight to the tubs so the water does not touch the air before bathing. The flow is generous, filling a tub in about an hour at 150 liters per minute.

The inn has two large baths, three open-air baths, two private baths and in-room open-air baths, each tub fed by its own source. Day-trip bathing runs from 11:30 to 15:00 (last entry 13:30) for 1,800 yen per adult and 900 yen for elementary school children and under. No reservation is needed and payment is cash only.