Sankodai Observatory

Sankodai — the name means "three-lake platform" — is a ridge-top viewpoint on the western Fuji Five Lakes that earns its title by taking in three of the lakes in a single sweeping panorama: Lake Saiko, Lake Shoji and Lake Motosu, all visible at once on a clear day, with Mount Fuji presiding over the scene. It is one of the most rewarding easy walks in the region, combining a genuine sense of highland openness with a view that few roadside lookouts can match.

The observatory sits along the Tokai Nature Trail, the long-distance footpath that threads through this volcanic upland, and it is most easily reached as a continuation of a visit to the neighbouring Koyodai viewpoint. From Koyodai, a pleasant walk of about fifteen minutes along the ridge brings you to Sankodai's spacious resting area, where the forest opens to reveal the lakes below and Fuji beyond. The gentle grade and short distance make the pairing of the two viewpoints an ideal outing for travellers who want a taste of hiking and big scenery without committing to a strenuous climb — the round trip from the parking area can be done comfortably within about an hour.

What makes Sankodai special is the geography it lays bare. Standing on the ridge of Mount Ashiwada, you look out over the plateau that Fuji's ancient eruptions shaped, with the dark expanse of the Aokigahara forest and the scattered lakes it dammed spread beneath you. Being able to identify Saiko, Shoji and Motosu simultaneously gives a satisfying grasp of how the whole Fuji Five Lakes landscape fits together — a perspective that transforms a jumble of individual lakes into a coherent, dramatic whole. A trail map helps pick out each body of water.

Seasons shift the mood. Autumn brings turning foliage along the ridge and the crisp air that yields the sharpest views; clear winter days can be spectacular, with a snow-covered Fuji and dry, transparent skies revealing all three lakes; spring and summer offer lush greenery and the chance of clouds swirling in the valleys below. Because it faces the western aspect of Fuji, the viewpoint is generally at its best under morning light.

Sankodai is free, unstaffed and refreshingly uncrowded compared with the honeypot sites nearer Kawaguchiko town, appealing to travellers who enjoy quieter, more natural viewpoints. Facilities are minimal, with the nearest restrooms and parking back at Koyodai, so it is best treated as part of a short walking loop rather than a drive-up stop. For anyone spending time around the western lakes — perhaps combined with Lake Saiko, the Iyashi-no-Sato village, or the Narusawa and Fugaku lava caves — Sankodai delivers a memorable, multi-lake view of Fuji for nothing more than a gentle stroll along the ridge.