mt.yake-dake with taisho pond taishoike was formed in 1915, when an eruption of the nearby volcano mt. yakedake dammed the azusa

1915 alpine alps azura azusa beautiful dammed environment eruption fall famous foliage forest formed green happy hill holiday hotaka illustrative japan kamikochi landscape leaf mountain mthotaka mtyakedake nagano national nature nearby outdoor park peak pond prefecture range red river scenery scenic season shinano sightseeing snow spots stone taisho taishoike tender tourism trekking vacation volcano was water when yakedake yellow