Hangetsu Mountain (半月山, ‘Half-Moon Mountain’) is Nikko’s most varied half-day loop — a 6-hour circular trail that takes you from Lake Chuzenji’s shoreline up through plateau forest, across two mountain peaks, and back down to the lake via a quiet lakeside path past the Italian Embassy Villa and Chuzen Temple. The trail has something for every kind of hiker: a plateau rest area with benches and abundant wildlife, a forested peak that hides its best view ten minutes beyond the summit marker, cliff-top lake panoramas on the return, and one of the most accessible trailheads in Oku-Nikko. Suitable for everyone from beginners to experienced hikers.

Why Hike Hangetsu?

Hangetsu Mountain sits directly above Lake Chuzenji on its south side, offering a trail that nobody in the tourist buses passing below will see. While thousands of visitors look up at the mountains from Kegon Falls, a handful of hikers are up there looking back down at the lake. This is the appeal of Hangetsu: proximity to one of Nikko’s busiest areas, combined with complete trail solitude.

The loop route is also one of the most satisfying structural hikes in Nikko — you earn the views on the way up, rest on the Chanokidaira plateau, navigate the forested summit, find the hidden lookout deck, and then descend to the lake for a quiet lakeside walk back to the start. It finishes near the Italian Embassy Villa Park and Chuzen Temple, making it easy to add a cultural visit to the end of the day.

Getting to the Hangetsu Trailhead

The trailhead is the Torii gate at the entrance to Lake Chuzenji, approximately 15 minutes’ walk from the Kegon waterfall bus stop. It can also be reached from the Tachiki Kannon Iriguchi bus stop, which is slightly closer.

By bus from Nikko: Take the World Heritage Bus or Tobu Bus from Tobu Nikko or JR Nikko station to Kegon waterfall (Kegon-no-taki). Journey time approximately 50 minutes. Buy the All Nikko Pass before you go. Walk 15 minutes from the bus stop to the Torii gate trailhead. A short view of Lake Chuzenji and Nantai Mountain appears about 50 metres past the gate.

From Earth Hostel: Free morning shuttle to Nikko Station, then bus to Kegon waterfall. Total journey approximately 55–65 minutes.

The Trail: Full Loop Description

Trailhead to Chanokidaira plateau: The trail starts simply — a gradual ascent into forest from the Torii gate. The first highlight appears reasonably quickly: an early view of Lake Chuzenji and Nantai Mountain rising dramatically from the water, visible through a gap in the trees. From here, the trail climbs to the Chanokidaira plateau — but note that the approach requires an almost complete descent and re-ascent to reach it.

Chanokidaira plateau (rest stop): The plateau is largely shaded by forest growth and vegetation, creating a cool, sheltered atmosphere. Several benches allow a proper rest. The wildlife here is particularly active — birds are abundant and the plateau is one of the best spots on the entire trail for sitting quietly and listening. There is a SoundCloud wildlife recording of the Chanokidaira embedded below.

Nujin peak to Hangetsu peak: After the plateau, the trail continues to Nujin peak and then to the main Hangetsu peak. Again this involves descents and re-ascents between the peaks. The path merges briefly with the parking area of the abandoned Chuzenji Observatory before splitting again onto a slight incline for several minutes. Birch trees become the dominant species as you gain elevation.

⚠️ Important: Hangetsu peak has no views. The summit is completely surrounded by trees. If you stop at the peak marker and turn back, you will miss the best part of the hike. Walk approximately 10 minutes further along the trail to the lookout deck, from where views of Nantai Mountain and Senjogahara in the distance open wide. Deer frequently shelter under the deck — approach quietly.

Lookout deck wildlife audio:

Descent to Mujinakubo and Lake Chuzenji: The descent is steep and uses switchbacks for much of the way. Listen carefully on the way down — a creek runs to the left (west), off-trail but audible, flowing down to Lake Chuzenji. At the lake, the trail arrives at Mujinakubo — a remote bay on the lake’s south shore with a beautiful view across to Nantai Mountain. This is a great spot to rest before the lakeside return.

Lakeside return (Mujinakubo to start): The walk back along the north-facing lake shore is quieter and flatter than the mountain section. The trail passes two notable cultural landmarks: the Italian Embassy Villa Park (a historic summer residence open to visitors) and Chuzen Temple. Fallen maple leaves and birch bark make this section spectacular in autumn. The trail eventually returns to the Kegon Falls area where you began.

Trail Photos

About 50 metres past the trailhead gate — the first view of Lake Chuzenji and Nantai Mountain rising from it.

Trees wrapped with protective nets — a common sight in Nikko forests where deer strip the bark.

The Chanokidaira plateau — shaded, cool, and filled with birdsong. Several benches for a proper rest.

The trail briefly merges with the abandoned Chuzenji Observatory parking area before splitting back into forest.

Birch trees dominate the upper section of the trail near the peak.

Hangetsu peak — completely surrounded by trees with no view. Walk 10 more minutes to the lookout deck.

From the lookout deck — Nantai Mountain and Senjogahara spread across the view. Worth every step beyond the summit.

Lake Chuzenji from Mujinakubo bay at the end of the descent — a serene arrival point after the mountain section.

The lakeside return in autumn — koyo maple leaves, birch bark, and Lake Chuzenji shimmering below Nantai Mountain.

Best Season

Frequently Asked Questions

Is Hangetsu Mountain suitable for beginners?
Yes — the trail is Class 2 and suitable for anyone with reasonable fitness. There are no technical sections, no scrambling, and no exposed ridgelines. The 6-hour duration is the main consideration; pace yourself on the ascent to Chanokidaira.

How do I get to Hangetsu from Nikko station?
Take the World Heritage Bus or Tobu Bus to the Kegon waterfall (Kegon-no-taki) bus stop — approximately 50 minutes. Walk 15 minutes to the Torii gate trailhead. Alternatively, alight at Tachiki Kannon Iriguchi, which is slightly closer to the trailhead. Buy the All Nikko Pass before departing.

Why is there no view from Hangetsu peak?
The summit is densely forested. The actual views are found at the lookout deck approximately 10 minutes past the peak along the continuing trail. Do not turn back at the summit marker.

What are the Italian Embassy Villa and Chuzen Temple?
The Italian Embassy Villa Park is a historic summer residence dating from the early 20th century, now open to the public as a park on the north shore of Lake Chuzenji. Chuzen Temple (Chuzenji Temple) is an ancient Buddhist temple near the lake’s eastern shore, closely associated with Nikko’s religious history. Both are worth a brief stop on the lakeside return.

Can I do Hangetsu as a day trip from Tokyo?
Yes. Take the first Tobu Nikko Limited Express from Asakusa and be at the Kegon Falls bus stop by 10 AM. You’ll have enough time for the full 6-hour loop and the last bus back to Nikko station. Staying at Earth Hostel and starting early makes the day much more relaxed.

Hike Hangetsu from Earth Hostel

Earth Hostel is 50–60 minutes from the Hangetsu trailhead by shuttle and bus. We run free morning shuttles to Nikko Station so you can catch the first bus to Kegon Falls. Hangetsu is a great day-before or day-after pairing with Senjogahara — both are accessible from the same bus corridor. See all hiking trails in Nikko ›

Last updated: April 2026. Bus schedules to Kegon Falls are seasonal — verify current timetables before departing.