This is my favorite trail on Mt. Aso. It was closed for a while when the volcanic activity level was higher, but now it’s open again. The trailhead is located at a rest station that was once bustling with hikers back in its popular days, but now it’s much quieter—perfect for enjoying a peaceful hike without too many people around.

Mt. Takadake & Mt. Nakadake via Sunasenri Trail

The volcanic ash covering the Sunasenri Plains gives them an otherworldly quality, like the barren surface of the Moon. From its desolate mountain terrain and rising smoke to the emerald-green crater lakes (hot spring pools), Mt. Nakadake gives visitors a glimpse into the inner workings of planet Earth.

Mt. Aso Trail Map

I recommend planning your visit around May, when clusters of Kyushu azaleas (Rhododendron kiusianum) bloom at the Sensuikyo Gorge trailhead and Mt. Takadake East Peak, coloring the foot of the mountain in hues of pink.

Trailhead: Sensuikyo Parking Lot

Trail on YAMAP: https://yamap.com/activities/34594994

Accessibility & How to Get to the Trailhead:

By Car:
Drive to the Sensuikyo Parking Lot, where free parking is available.

By Public Transport:
Take a taxi from JR Miyaji Station

Hike Details:

• Distance: Approx. 6 km (round trip)

• Duration: 4~5 hours

• Incline: About 700 meters

• Difficulty: Moderate

General Information & Summary:

Mt. Takadake (1,592 meters) and Mt. Nakadake (1,506 meters) are part of the Aso Caldera, one of the world’s largest active volcanic calderas. The Sunasenri Trail offers hikers a unique opportunity to explore this stunning volcanic landscape, with vast plains of volcanic ash and scenic crater views.

The hike begins at the Sensuikyo Parking Lot, where you quickly enter the volcanic terrain that defines the region.

After about 20 minutes of hiking, you’ll reach the first viewpoint, offering stunning views of the caldera. The trail then takes you through the Sunasenri plain, a dramatic landscape of volcanic ash that showcases the raw beauty of the Aso region. Along the way, several panoramic viewpoints ensure you’re constantly rewarded with breathtaking scenery.