Mount Yokotsu

Rising to 1,167 metres between Hakodate and the lakes of Onuma, Mount Yokotsu (Yokotsu-dake) is the highest peak in the immediate Hakodate area and the region's premier mountain hike. For visitors who want to go beyond the city's slopes and cable-car viewpoints into genuine backcountry, Yokotsu offers a serious, rewarding day out and one of the finest panoramas in southern Hokkaido from its summit.

The mountain forms part of the volcanic uplands that separate the port city from the Onuma basin, and its long ridges are cloaked in forest that gives way to alpine scrub and open rock near the top. The hike to the summit is a substantial undertaking, typically a full-day, round-trip effort rated for fit and experienced walkers. The trail climbs steadily through changing vegetation, and hikers should come prepared with proper footwear, plenty of water, weather protection and a map, as the route is long and conditions on the exposed upper slopes can shift quickly.

The payoff is the view. From the summit on a clear day the vista is genuinely spectacular and unusually complete: the city of Hakodate and its distinctive neck of land spread out to the south, the lakes of Onuma glitter to the north beneath the jagged crown of Mount Komagatake, and the sea stretches away on both sides of the peninsula, so that you can take in almost the entire geography of the region in a single sweep. Few vantage points in the area rival it, and for many hikers that all-encompassing panorama is the highlight of a trip to southern Hokkaido.

Because it is a mountain rather than a tourist facility, Yokotsu sees far fewer visitors than the city sights, and its trails have a peaceful, wild quality. In summer the forest is cool and green and the weather most stable, while early autumn brings colour to the slopes; these are the best seasons to attempt the climb. Outside the warmer months, snow and difficult conditions make the mountain a destination for well-equipped, experienced parties only.

Access is by car, as there is no direct public transport to the trailheads, which lie inland between Hakodate and Onuma. This makes Yokotsu a natural pairing with an Onuma visit for active travellers, though the hike itself demands a dedicated day. Starting early is strongly advised to allow ample time for the long round trip and to enjoy the summit before afternoon cloud builds.

Mount Yokotsu is not a casual stroll, and it rewards preparation and respect for mountain conditions. But for those with the fitness and time, it delivers the deepest natural experience the Hakodate area offers: a strenuous climb through quiet forest to a summit where city, lakes, volcano and open sea all lie spread beneath your feet at once, a fitting high point, literally, of a journey through southern Hokkaido.