Geosite introduction of Aso

12.Cluster of Springs in Aso Valley District Geosite

Cluster of Springs in Aso Valley District Geosite

Alluvial fan and artesian aquifer

This unusual geosite features both an alluvial fan formed by rivers flowing from the central cone group, and subterranean rivers that spurt from the ground in artesian springs. Rainfall over the central cone group and Aso Gogaku percolates deep into the ground, where high levels of pressure send it spouting high into the air.

Miyaji and Yakuinbaru District Springs

The Ichinomiya and Yakuinbaru districts of eastern Asodani Valley are blessed with abundant springs, which rise to two meters into the air. Residents use the spring water for household and agricultural needs.