Ishiuchi Maruyama Mountain
The landform the resort sits on: the shape of the hill beyond the pistes, how steep it gets, and where it stands among the mountains on JapowDB.
Broadly one hillside, leaning to the north-east.
Where this vertical sits among the mountains on JapowDB
664 m, more than 31 of the 50 mountains on JapowDB.
The mountain
- Above it
- 高津倉山 (Takatsukura-yama) 1,181 m
- Landform
- A low, unnamed rise on a mudstone ridge. The lifts top out there at about 916 m, and the runs fall north-east from there toward the Uonuma valley. South-west of the top the ridge dips to about 875 m and then climbs to Takatsukura-yama (1,181 m), the summit of the neighbouring GALA Yuzawa area. That 40 m dip makes the top here a hill of its own, but only just.
- Rock
- The ground changes on the way down. The top band, from about 790 m to the top, is Miocene marine mudstone: soft, lifted sea-floor mud, the same rock as GALA's summit next door. Between about 700 m and 500 m the runs cross diorite, a hard granite-like rock that pushed up into that mudstone later, at the very end of the Miocene. Below about 400 m the slopes sit on fan and scree deposits washed off the hill, and the base is on river-valley gravel.
From published sources, checked by hand · 2026-11-09
That ground is outside the ski area. It is not patrolled.
Measured
01
Which way it faces
Faces north-east.
Most of the mapped runs fall away toward the north-east.
02
How steep it gets
Its steepest pitch measures 31.3°.
Its steepest tenth is steeper than 25 of the 50 mountains here that carry pitch data.
18.3° the steepest tenth of runs
03
How varied it is
Its runs range from 4.7° to 23.1°.
Half of them are gentler than 11.1°. Each mark is one run.
That spread is wider than 32 of the 49 mountains here that carry pitch data.
04
What grows on it
Mostly deciduous: broadleaf woods and larch. They stand bare through the winter, so you can see a long way into them.
Read off the national vegetation survey (2024 edition), from fieldwork in 2013.
The forest on this mountain, in detail