Palcall Tsumagoi Resort Mountain
The landform the resort sits on — the shape of the hill beyond the pistes, how steep it gets, and how it stands among the mountains we publish.
One hillside, and it falls away to the east-south-east.
Where that vertical sits among the mountains we publish
730 m, more than 18 of the 29 mountains on JapowDB.
The mountain
浦倉山 (Urakura-yama) 2,091 m
- Above it
- 四阿山 (Azumaya-san) 2,354 m
- Landform
- A volcano, and a big one, though it has been quiet a long time. Azumaya volcano erupted between roughly 800,000 and 450,000 years ago and built a large stratovolcano; what is left of its summit is a ring of ridges around a hollow about 3 km across, the Azumaya caldera. Urakura-yama sits on the eastern arc of that ring and Azumaya-san on the southern, which is why the ground keeps climbing another 265 m past the top of the lifts, dipping barely 14 m on the way. The eastern flank you ride is the Urakura edifice, the last part of the volcano to be active — it stopped around 450,000 years ago with its lavas running east, and it has been eroding ever since.
- Rock
- Andesite and basaltic andesite, lava and pyroclastic rock, and the national survey returns exactly the same answer at 2,089 m as it does 160 m lower at 1,928 m. That is the Urakura lava, which poured east off the volcano and set as one apron rather than a set of separate spurs — the reason the terrain here reads as a single ESE face over 703 m of lift-served vertical instead of breaking into several. Near the base, at 1,383 m, the rock changes: volcanic fan deposits, the loose debris the mountain shed downhill onto the Tsumagoi plateau.
Researched rather than measured. Sourced and checked by hand · 2026-08-28
That ground is outside the ski area. It is not patrolled.
Measured
01
Which way it faces
Faces east.
Most of the mapped runs fall away toward the east.
02
How steep it gets
Its steepest pitch measures 22.6°.
Its steepest tenth is steeper than 0 of the 29 mountains here that carry pitch data.
11.0° the steepest tenth of runs
03
How varied it is
Its runs range from 3.7° to 12.8°.
Half of them are gentler than 8.8°. Each mark is one run.
That spread is wider than 3 of the 29 mountains here that carry pitch data.
04
What grows on it
Both kinds, in patches. Some stands drop their leaves and open up for the winter; others are evergreen conifer and stay closed.
Read off the national vegetation survey (2024 edition), from fieldwork in 2013.
The forest on this mountain, in detail