Hakuba Iwatake Snow Field 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.
This mountain faces several ways at once, mostly north-west and west.
Where this vertical sits among the mountains on JapowDB
539 m, more than 8 of the 34 mountains on JapowDB.
The mountain
岩蕈山 (Iwatake-yama) 1,289 m
- Landform
- Iwatake-yama is a free standing hill in the middle of the Hakuba valley, separate from the range behind it. The lifts reach its top, and because the hill has no ridge to follow, the runs leave in several directions at once.
- Rock
- The rock is early Jurassic sandstone and mudstone in alternating beds, sea and river sediment around 190 million years old, nothing like the serpentinite its neighbours stand on. Below that are terrace deposits off the valley floor.
From published sources, checked by hand · 2026-08-12
That ground is outside the ski area. It is not patrolled.
Measured
01
Which way it faces
Several faces: north-west and west.
The mapped runs fall away down more than one side of the hill.
02
How steep it gets
The steepest quarter of the runs faces east, a different way from the mountain overall.
Its steepest pitch measures 34.9°.
Its steepest tenth is steeper than 17 of the 34 mountains here that carry pitch data.
18.5° the steepest tenth of runs
03
How varied it is
Its runs range from 8.5° to 19.2°.
Half of them are gentler than 13.5°. Each mark is one run.
That spread is wider than 4 of the 34 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 2017.
The forest on this mountain, in detail