East Hokkaido · KushiroNo.705★★★Open in map →
Kushiro Shitsugen National Park
Japan's largest wetland, seen from the Hosooka observation deck on its eastern rim. A small wooden station on the Senmo Main Line sits at the foot of the hill, which makes this the one viewpoint in the park you can reach on foot from a train.
- FromKushiro Station
- Train + 20-min walkJR Senmo Line, a few trains a day
- Get off atKushiro-Shitsugen Station (JR Senmo Main Line)
- On foot
- Kushiro Shitsugen National Park
Where it is
102 more notes in Hokkaido · open the map →What to look for — in walking order
- Kushiro-Shitsugen Stationa small unstaffed wooden station standing alone in the woods, built for the marsh
- The hill patha signed climb from the station through mixed woodland up to the rim
- Hosooka Visitors Loungea rest house partway up with photo displays and a small refreshment counter
- Hosooka Observation Deckthe open deck on the rim, with the loops of the Kushiro River directly below
- The Akan peaksMt Meakan and Mt Oakan on the western horizon, visible when the air is clear
How to actually get there
- Kushiro Station → Kushiro-Shitsugen on the JR Senmo Main Line (only a few services a day — fix the return before you go).
- From the station, take the signed path uphill through the woods, past the Hosooka Visitors Lounge.
- Look out over the marsh and the river's loops from the deck, ideally in the late afternoon.
- Walk back down to the station in time for the return service.
- JR Senmo Main Line from Kushiro
- Take the Senmo Main Line north from Kushiro Station and get off at Kushiro-Shitsugen, an unstaffed halt built to serve the marsh. Only a handful of trains a day work this stretch, so the outward and return services have to be chosen together before you leave. From the station it is a signed uphill walk to the deck.
- Return on the same line
- Trains back to Kushiro run on the same thin timetable, and there is nothing at the station but a shelter and the woods. Read the departure board when you arrive rather than after you have walked up — the gap between services here is measured in hours, not minutes.
About the place
Kushiro Shitsugen fills a lowland basin behind the port city of Kushiro in eastern Hokkaido. The national park covers 28,788 hectares across four municipalities, and most of what it protects is reed and sedge marsh growing on Japan's largest body of peat. The Kushiro River does not cross it in a straight line — it loops and doubles back over the flat ground, with stands of alder marking the older channels. Red-crowned cranes breed here, alongside Blakiston's fish owls and Sakhalin taimen. From the Hosooka deck on the eastern rim, all of it reads as one unbroken plain running out to the hills.
How to enjoy it
The deck is a signed climb from the station, and it is free to enter. Aim for late afternoon: the deck looks west, and the sunset over the marsh is the view the place is known for. The visitors lounge partway up runs shorter hours from October, so do not count on it for shelter in the cold months.
Background & history
The marsh was added to the Ramsar list in 1980, and the national park was designated in 1987 — the twenty-eighth in Japan. The Ramsar area was widened in 1999 to 7,863 hectares, which is the core of the marsh rather than the whole park. Both designations rested on the same argument: this basin holds species that survive almost nowhere else in the country, the red-crowned crane among them. The park boundary was drawn to take in the low hills that ring the wetland, which is why a deck like Hosooka stands inside the park looking down rather than outside it looking in.
Before you go
- Cash
- The deck and the path up are free. The visitors lounge partway along sells refreshments and takes payment on the spot. Kushiro-Shitsugen is an unstaffed station, so settle the fare with the conductor or back at Kushiro, and carry what you need — there are no shops between the platform and the deck.
- Before you go
- In winter many services pass Kushiro-Shitsugen without stopping, something the Kushiro tourism association states plainly, so confirm that your train actually calls there before planning a cold-season trip. The path up lies under snow through those months, and the visitors lounge keeps shorter hours.
- Another way
- The western side of the marsh — the Kushiro City Marsh Observatory and the Onnenai boardwalk — is served by Akan Bus on the Tsurui route, around six runs a day and fewer at weekends. No public transport crosses the marsh between the two sides, so treat east and west as separate outings.
- After you get off
- From Kushiro-Shitsugen Station, follow the signed path uphill through the woods. The Hosooka Visitors Lounge stands partway along it, and the deck is at the top of the rise.