The south shore of Lake Chuzenji is one of the wildest and least-visited sections of Nikko National Park. While the north shore road carries buses full of tourists to Kegon Falls and the onsen resorts, the south side is accessible only on foot — a rugged, forested lakeside trail that passes remote coves, ancient cedar groves, creek crossings, and one of the park’s most quietly spectacular spots: Kumakubo, known as Bear Cove. This guide covers Section 1 of 3 of the Lake Chuzenji south shore trail — from Shobugahama to Senjugahama via Kumakubo — a 4-hour hike that can also serve as a standalone day, an overnight camping trip, or the start of a full lake circumnavigation.
👞 Trail at a Glance — Section 1: Shobugahama to Senjugahama
| 📏 Distance | ~4 km (one way) |
| ⏱ Duration | 4 hours one way |
| 💪 Difficulty | Moderate — Class 2–3 (boulder traverses) |
| 📍 Start Point | Shobugahama bus stop, south shore Lake Chuzenji |
| 🏁 End Point | Senjugahama |
| 🌟 Highlight | Kumakubo (Bear Cove) — remote lakeside cove |
| 🔄 Trail Type | Point-to-point (south shore lakeside) |
| 🌸 Best Season | April – November (spring, summer & autumn all excellent) |
| 🚌 Bus Access | Tobu Bus to Chuzenji Onsen, then local bus to Shobugahama |
| 🌿 National Park | Yes — Nikko National Park |
| 🏕 Camping | Shobugahama pier area (basic lakeside camping) |
🏠 Base at Earth Hostel Nikko Riverhouse — free shuttle from Nikko Station. Combine this trail with river swimming at the hostel for a perfect active day.
About the Lake Chuzenji South Shore Trail
Lake Chuzenji (中禅寺湖) is a volcanic crater lake at 1,270 m above sea level, formed when a lava flow from Mount Nantai dammed the Daiya River approximately 20,000 years ago. The north shore is accessible by road and heavily visited. The south shore is not. No road runs along it, and the only way to explore it is on foot.
The full circumnavigation of Lake Chuzenji covers three sections. This page covers Section 1 — the most accessible and most commonly hiked section, running along the south shore from Shobugahama to Senjugahama via Kumakubo. The trail hugs the lake shore, passing through dense cedar and beech forest, crossing several creeks (some without bridges), traversing large boulder sections, and reaching the remote rocky cove of Kumakubo — a personal favourite of the hostel team, loved for its complete quiet and stunning lake views framed by Nantai Mountain.
What makes this section Class 2–3 in difficulty — despite being only 4 km — are the boulder traverses. In several sections the trail crosses large rock formations where your feet may need to find holds between boulders, and creek crossings occasionally require stepping stones rather than bridges. Boots can get wet. But there is nothing technical, and any fit and sure-footed hiker will find it manageable.
Getting to the Shobugahama Trailhead
By bus from Nikko:
1. Take the Tobu Bus from Tobu Nikko or JR Nikko station to Chuzenji Onsen (approximately 50 minutes). Buy the All Nikko Pass before you go.
2. From Chuzenji Onsen, take the local lakeshore bus to Shobugahama bus stop on the south shore. Check current bus timetables at the Chuzenji Onsen bus terminal — service to Shobugahama can be limited depending on season.
From Earth Hostel: The free morning shuttle drops guests at Nikko Station. Take the first bus to Chuzenji Onsen, connect to the Shobugahama bus. Total journey from hostel: approximately 60–75 minutes.
Camping at Shobugahama: There is basic camping at the Shobugahama pier area — lakeside flat ground with minimal facilities. If you want to do this trail as an overnight — camping at Shobugahama on Day 1, hiking to Bear Cove and back on Day 2 — this is an excellent option. Check conditions with the Nikko National Park office or at the hostel before arriving.
The Trail: Shobugahama to Senjugahama via Kumakubo
Shobugahama (start): The bus stop sits at a small lakeside clearing with picnic tables and a pier. From here you can see across Lake Chuzenji to the north shore resort area and, to the west, the bulk of Nantai Mountain rising above the lake. The trail begins following the south shoreline westward, initially on easy flat ground.
Lakeside forest section (~1 km): The trail enters dense forest that stays close to the lake’s edge. Because the south shore receives less sunlight than the north, the forest here is humid and rich with mushrooms throughout summer and autumn — an extraordinary variety of fungi grows along the trail floor. The sound of the lake is constant. Deer are commonly seen in this section.
Creek crossings (~1–2 km): Several creeks descend from the southern slopes and cross the trail into the lake. Some have simple plank bridges or stepping stones; others require improvised crossings. In late summer and after rain, water levels rise — be prepared for wet boots on some crossings.
Boulder traverses (~2–3 km): The most challenging sections of the trail involve traversing large volcanic boulders where the trail passes close to the lake’s edge. The boulders are stable but require careful foot placement. This is what elevates the trail from Class 1 to Class 2–3 — take it slowly, test each hold, and use trekking poles if you have them.
Kumakubo — Bear Cove (~3 km, ~2.5 hours from start): Kumakubo is a rocky cove on the south shore, backed by cliffs and open to a wide view of Lake Chuzenji with Nantai Mountain rising directly across the water. It is consistently one of the least-visited spots on the lake and one of the most beautiful. The water here is deep and cold and extraordinarily clear — a very remote place to swim. Rest here before continuing.
Senjugahama (~4 km, ~4 hours from start): The trail continues west from Kumakubo along the shore to Senjugahama, a small beach on the lake’s southwestern shore. From here the trail can be extended toward Lake Sai (Sainoko), or you can return to Shobugahama the way you came and catch the bus back to Chuzenji Onsen.
Trail Photos
The starting point at Shobugahama — picnic tables at the lakeside clearing near the bus stop.
Shobugahama pier with the basic camping area visible in the background.
The pier in autumn — one of the most beautiful times to hike this trail, with koyo colour reflected in the lake.
Deer are common along the south shore trail, particularly in the early morning and at dusk.
Bear Cove (Kumakubo) — one of the most remote and beautiful spots on Lake Chuzenji. The water is extraordinarily clear.
The water at Kumakubo. Deep, cold, and crystal clear.
Nantai Mountain reflected across Lake Chuzenji from Kumakubo cove — the view that makes the effort worthwhile.
Extend the Route
+ Lake Sai (Sainoko): From Senjugahama, continue west along the south shore to remote Lake Sai. Add approximately 1 hour and 3 km. Lake Sai is one of the most overlooked destinations in Nikko — a hidden lake west of Chuzenji with very few visitors.
+ Senjogahara: From Lake Sai or Senjugahama, the trail continues northeast and can connect via longer routes to Senjogahara. This becomes a multi-day expedition and requires planning.
+ Sections 2 & 3: The full Lake Chuzenji south shore circumnavigation continues in two additional sections beyond Senjugahama, eventually completing the full lakeside loop.
Best Season & Trail Conditions
| Season | Conditions | Notes |
|---|---|---|
| Spring (April–May) | Fresh green; quiet; good light | Creek levels can be high from snowmelt. Check bus to Shobugahama is running. |
| Summer (June–August) | Lush and humid; mushrooms abundant; good for swimming at Kumakubo | Excellent season. The south shore is noticeably cooler than the valley. |
| Autumn (September–November) | Peak koyo colour; brilliant light; deer active | Best season for photographs. October is spectacular. Check last bus times. |
| Winter (December–March) | Trail passable but bus to Shobugahama may not run | Confirm bus access before attempting. Trail can be icy near creek crossings. |
What to Bring
• Waterproof hiking boots (creek crossings can get feet wet)
• Trekking poles (helpful for boulder traverses and creek crossings)
• Water: 1.5–2 litres per person (no reliable sources on the south shore trail)
• Packed lunch — plan to eat at Kumakubo
• Rain jacket
• Insect repellent in summer (humid lakeside forest)
• All Nikko Pass or bus fare
• Download offline maps — signal patchy on the south shore
Frequently Asked Questions
How difficult is the Lake Chuzenji south shore trail?
Section 1 is rated Class 2–3, making it moderate to moderately challenging. The difficulty comes from boulder traverses and creek crossings without bridges, not from elevation gain. Fit hikers in waterproof boots will manage it well. Not suitable for very young children or anyone with balance or mobility issues.
How do I get to Shobugahama bus stop?
From Chuzenji Onsen bus terminal, take the local lakeshore bus to Shobugahama on the south shore. Service can be limited — check the current Tobu Bus timetable before departing from Nikko. Buy the All Nikko Pass for best value.
Can I camp at Shobugahama?
Basic lakeside camping is available at the Shobugahama pier area. There are minimal facilities. Confirm conditions with the Nikko National Park office or at Earth Hostel before arriving. The combination of camping at Shobugahama and hiking to Bear Cove the following morning is one of the most memorable overnight experiences in Nikko National Park.
Is swimming possible at Kumakubo (Bear Cove)?
Yes — Kumakubo is one of the most beautiful and remote swimming spots in the Nikko area. The water is cold, deep, and crystal clear. Summer (July–August) is the best time. There are no facilities.
Can I do this trail as a day trip from Tokyo?
Yes, but the timing is tight. Take the first Tobu Nikko Limited Express from Asakusa and connect to the Chuzenji bus and onward to Shobugahama. You’ll have approximately 4–5 hours on the trail before needing to head back for the last bus. Staying at Earth Hostel and starting early the following morning is a much more relaxed approach.
Hike the Lake Chuzenji South Shore from Earth Hostel
Earth Hostel is the natural base for this hike. Our free morning shuttle gets you to Nikko Station for the first bus to Chuzenji, and the hostel’s riverside location makes it easy to decompress after a full day on the trail. Bear Cove is one of our personal favourite spots in the park — we’ve camped there and hiked the trail in every season. Ask us for current trail conditions and the best bus timing before you go.
If you’re planning the full Lake Chuzenji circumnavigation or want to combine this trail with Lake Sai, Senjogahara, or the Takayama route, we can help sequence the days. See all hiking trails in Nikko ›
Last updated: April 2026. Bus service to Shobugahama is seasonal — always confirm current timetables before departing. Creek crossing conditions vary with rainfall and snowmelt.
