Also on the map ofYatsugatake Mountains

Ainodake · 3,189 m · 39 km SSW

Mountain · Southern Yatsugatake Volcanic Group · Nagano Prefecture

Mount Aka

2,899 m9,511 ft

Prominence: 1,911 m6,270 ft
Isolation: 26 km
Tonight: 1°CPartly cloudy · Wind 14 km/h SW

Mount Aka is a 2,899 m (9,511 ft) mountain in the Southern Yatsugatake Volcanic Group, Nagano Prefecture, Japan.

All facts

Elevation: 2,899 m · 9,511 ft
Nearest higher peak: Mount Kaikoma (2,967 m)
Range: Southern Yatsugatake Volcanic Group
Region: Nagano Prefecture, Japan
Coordinates: 35.9710° N, 138.3704° E

Open the 3D view

3D map

Mount Aka 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 11.6 × 11.6 km

Surface

Vertical scale

Topographic map

Mount Aka terrain and contours

100 m contours from the Copernicus GLO-30 terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.

Index contours every 500 mShowing west → east through the summit

Mount Aka elevation profile

West → east through the summit

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.

Weather

Mount Aka weather

Today · Heavy rain · 1 / 4°C (34 / 39°F) · 9.7 mm · Wind 14 km/h SW

Mount Aka forecast for the summit, about 2,899 m. Summit vs base: the Base line is for about 1,274 m.

Today1°4°9.7 mm14 km/h SWBase 11 / 14°
Sun2°7°12.5 mm14 km/h SWBase 12 / 16°
Mon2°4°24.8 mm9 km/h SBase 11 / 14°
Tue-6°8°1.3 mm8 km/h NWBase 4 / 17°
Wed-8°0°–6 km/h NWBase 1 / 10°
Thu-3°1°0.2 mm10 km/h SBase 6 / 11°
Fri-3°6°–9 km/h SWBase 7 / 16°
Sat-7°4°0.3 mm10 km/h WBase 3 / 14°
Sun-6°2°–5 km/h WBase 4 / 12°
Mon-5°1°0.2 mm8 km/h NBase 4 / 10°

Forecast data: MET Norway, CC BY 4.0; daily low and high, precipitation total and strongest wind from the hourly data, model run Oct 23, 23:18 UTC.

Slope

Share of the 11.6 × 11.6 km view by steepness, from the 30 m model.

Mixed terrain: gentle slopes, steep faces and everything between.

Gentle, 0–15°

28.6%

Moderate, 15–30°

43.5%

Steep, 30–45°

26.7%

Cliffs, 45° and over

1.2%

Steeper than 30°: 27.9% of the 135 km² view
Relief in view: 1,610 m low point 1,274 m

Land cover

ESA WorldCover 10 m classification of the same area.

Trees 93.1%Grassland 6.3%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Nearby summits

Named peaks within 5.8 km, measured from the Mount Aka summit.

Summit list 9

1Mount Amida2,805 m 1.1 km W
2Sange-mine2,825 m 1.4 km NNE
3Yoko-dake2,826 m 1.6 km N
4Mt. Okunoin2,830 m 1.7 km N
5Mount Asahi2,672 m 2.2 km SSW
6Mount Gongen2,715 m 2.6 km SSW
7Mount Akaiwanoatama2,656 m 2.8 km NNW
8Mount Iō2,760 m 3.1 km N
9Mount Tengu2,646 m 5.5 km NNW

Where it sits

Where Mount Aka sits

Nearby

Nearby places

More 1

Mount OsutakaPeak · 1,639 m29 km E

Downloads

Mount Aka downloads: topographic map, heightmap, STL 3D model and DEM

Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.

Print & wall

JPGMount Aka satellite image (JPEG)Sentinel-2 true-colour image of the same area, taken 2026-07-23.

3D printing & 3D apps

GIS & GPS

</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.

<iframe src="https://topolu.com/embed/mount-aka" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Mount Aka"></iframe>
<p><a href="https://topolu.com/mount-aka" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

Accuracy

How accurate is this?

16 m low This 3D map reads 2,883 m at the summit; the official height is 2,899 m.

Why: a 30 m terrain model averages each cell, so a sharp summit gets rounded off. The 90 m model misses by 37 m.

Source	Summit	Difference
Official height (Wikidata)	2,899 m	—
Copernicus GLO-30 (used on this page)	2,883 m	-16 m
Copernicus GLO-90	2,862 m	-37 m

Data sources

Terrain: Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Imagery: Contains modified Copernicus Sentinel data 2026 (scene 2026-07-23)
Land cover: © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
Facts: Wikidata (CC0)
Accuracy comparison, Panorama: Includes Copernicus WorldDEM-90 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Forecast: Weather forecast from MET Norway (CC BY 4.0)
Sources: Wikidata · OpenStreetMap · GeoNames · Wikipedia