Mount Tenzan Jogu Course

The Mount Tenzan Jogu Course climbs toward the 1,046 m grassy summit ridge of Mount Tenzan from the Kawakami area straddling Saga City and Karatsu, within Tenzan Prefectural Natural Park. The trailhead is reachable only by car, roughly 45 minutes from JR Saga Station via prefectural roads, with parking available at the Jogu trailhead parking area. The out-and-back route covers 4.5 km round trip and gains about 248 m, taking 1.5 to 2 hours, making it a shorter but steeper option than the park's other summit approaches. The lower section follows a dirt forest path through cedar plantation, giving way above the tree line to open grassland with loose volcanic soil underfoot; the final approach to the ridge is exposed to wind and has no tree cover, so a windproof jacket is recommended even in warmer months. There is no technical scrambling, but the sustained gradient and exposed summit ridge make trekking poles and proper hiking boots worthwhile. Key landmarks include the Jogu shrine partway up the route, which offers a reasonable turnaround point for a shorter outing, and the open ridge near the summit, from which the Sefuri mountain range and, on clear days, the Ariake Sea are visible. There are no water sources, huts, or shelters anywhere on the course, so hikers should carry all the water needed for the round trip. The course is at its best in April to June, when the grassland greens up, and September to November, when the ridge grasses turn gold; the exposed summit can be very windy outside these windows, and winter conditions occasionally bring frost to the upper ridge.