The cave was used for buddhist practice before this temple was built. During the Nanboku Period, monks were trained here.
Amidaji Temple (阿弥陀寺) is Pure Land Buddhist temple located in Hakone. It is also known as Ajisai Temple because about 3000 Ajisai planted by current Priest. Amidaji Temple was built in 1610 by priest Tansei while he was training at the cave of this mountain.
Visitors Info.
There is a parking.
Access
0. at Hakone Yumoto Station.
1. walk north west (30 min.)
45 min
New Wave Samurai Movie. 
映画好き集まれ！ 
The cave was used for buddhist practice before this temple was built. During the Nanboku Period, monks were trained here.