Overview
Mount Komegashira (also known as Mount Komego) is a 1,796.1-meter peak straddling the border between Minami-Uonuma City in Niigata Prefecture and Minakami Town in Gunma Prefecture's Tone District. The mountain sits on the central watershed divide separating rivers flowing toward the Sea of Japan from those flowing toward the Pacific, and it forms part of the ring of peaks enclosing the headwaters of the Tone River.
Highlights
- ●A 1,796.1-meter peak rising on the border of Niigata and Gunma prefectures
- ●Part of the central watershed divide separating the Sea of Japan and Pacific drainage basins
- ●Encircles the headwater area of the Tone River
- ●Protected within the Gunma Prefecture Natural Environment Conservation Area (eastern face of Mount Makihata)
History
Detailed historical records specific to this peak are limited, but the surrounding area is designated as part of the Gunma Prefecture Natural Environment Conservation Area, specifically the section covering the eastern face of Mount Makihata. Its position enclosing the Tone River's headwaters suggests the mountain has long been recognized as important to the watershed feeding areas downstream.
Access
The mountain lies in rugged terrain spanning Minakami Town on the Gunma side and Minami-Uonuma City on the Niigata side, and no public transport runs directly to the summit area. Anyone planning to hike should check current trail conditions and trailhead access with local municipal or mountaineering authorities before setting out.
Best season
Given its elevation of 1,796.1 meters, the mountain is affected by snow accumulation, so early summer through the autumn foliage season, after the snow has cleared, is generally considered the most practical time to hike. Confirm weather and trail conditions before your visit.
Map
36.9569, 138.9658 · Wikidata
Suggested itinerary
- 1Approach the mountain from the Minakami Town side and check gear and trail information near the trailhead
- 2Walk through the forested slopes within the nature conservation area, observing the vegetation and the terrain near the Tone River's headwaters
- 3Reach the ridge forming the central watershed divide, where rain divides toward the Sea of Japan and the Pacific
- 4Enjoy the view from near the 1,796.1-meter summit, looking out toward the Mount Makihata range
Did you know?
💡 Mount Komegashira is also known by the alternate name "Mount Komego." Because it lies on the central watershed divide, it is one of the points where a river's flow direction splits toward either the Sea of Japan or the Pacific Ocean. The name of its conservation designation, referencing the "eastern face of Mount Makihata," also reflects its position beside the well-known peak of Mount Makihata.
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