Lake Yamanaka (山中湖, Yamanakako) is the largest and highest of the Fuji Five Lakes, situated at an altitude of approximately 980 meters. Despite its expansive surface area, it is the shallowest of the five lakes, with a maximum depth of only 13.5 meters. This combination of high elevation and shallow water means that Yamanakako is the only lake in the region that frequently freezes over during the winter months. It is world-renowned among photographers for “Diamond Fuji,” a phenomenon occurring between October and February where the setting sun aligns perfectly with the mountain’s peak.
The lake is a major hub for outdoor recreation, particularly popular for windsurfing, yachting, and cycling. A dedicated cycling path runs along much of the shoreline, offering flat, accessible terrain with constant views of the mountain. Visitors can also board the “Swan Lake” sightseeing boat for a cruise across the water or visit the nearby Benifuji no Yu hot spring to soak in mineral-rich waters while viewing the volcanic cone. Because of its size and the cool summer climate, the area frequently hosts sports camps and retreats, maintaining a lively but spacious atmosphere. Its proximity to the Oshino Hakkai springs further cements its status as a primary destination within the Fuji-Hakone-Izu National Park.
| Access | ||
|---|---|---|
| Station / Stop | Line / Bus | Access Details |
| Fujisan Station | Fujikko-go Bus | Take the “Fujikko-go” sightseeing loop bus to the Yamanakako-Asahigaoka stop (approx. 30-40 mins) |
| Shinjuku Station | Chuo Highway Bus | Direct highway buses run from the Shinjuku Expressway Bus Terminal to Yamanakako-Asahigaoka (approx. 2.5 hours) |
| Gotemba Station | Fujikyuko Bus | Take the bus bound for Kawaguchiko and alight at Yamanakako-Asahigaoka (approx. 40 mins) |