Eboshi-dake, Volcanic summit in Nagano Prefecture, Japan

Eboshi-dake is a volcanic summit located between Tomi and Ueda in Nagano Prefecture, rising to approximately 2066 meters. Multiple hiking trails cross varied terrain, moving from forested slopes at lower elevations to rockier sections as the path climbs higher.

Eboshi-dake is a volcano at the western end of the Asama mountain range, on the border between Ueda and Tomi in Nagano Prefecture. Its two peaks, north and south, form a twin summit; the northern one reaches 2,066 m and the southern, Koeboshi-dake, 2,042 m. The mountain is one of the Shinshu Hyakumeizan, a selection of a hundred mountains of Shinshu.

The name refers to the eboshi, a black lacquered cap worn by Heian-period court nobles; the twin summit's shape suggested it. The mountain appears clearly from Ueda's streets, so many local schools sing Eboshi-dake in their school songs. A skyrunning race timed up the slope is held here.

The hiking trails are accessible throughout the year, though winter months require extra equipment and caution due to snow and ice on the slopes. Visitors should prepare for changing weather and bring properly equipped footwear for all seasons.

The summit offers views of multiple geological formations across the region, revealing the varied landscape of this mountain range. On clear days, visitors can see the contrasts between different rock types and vegetation zones that develop at various elevations.