Southern Hokkaido

Onuma Quasi-National Park [大沼 国定公園]

Onuma and Konuma
Onuma (The nearer lake) and Konuma

Mt.Komagatake and Onuma
Mt.Komagatake and Onuma
Photo by Hakodate city

Onuma Quasi-National Park is located about 30 km north of Hakodate city.
In Japanese, the first "o" in "Onuma" is pronounced long, so the word is "Ônuma".

There is Mount Komagatake volcano (1131 meters high) in the center of this area.

And there are main three lakes at the southern foot.
They are Lake Onuma (Ônuma), Lake Konuma and Lake Junsai.

These were formed after the landslides blocked a river when Mount Komagatake erupted in 1640.

In this area, we enjoy the landscape of volcano and lake, and the beautiful nature.

Lake Onuma (24 km in circuit) and Lake Konuma (16 km in circuit) are connected with a water channel, and a total of 128 small islands are in both lakes.

There is JR Onuma-koen station on about 0.7 km south of the water channel between Onuma and Konuma, and here is the starting point of the peripheral roads of both lakes.

Small islands in Onuma
Small islands in Onuma


Small Lake Junsai (5 km in circuit, "Junsai-numa" in Japanese) is located just west of Lake Konuma.

The word of "junsai" means a kind of water plants like water lily.
Literally, much junsai grow in this lake.
The young buds of junsai are edible in Japan.

Around these lakes, several hotels, minshukus, resort inns and lodges are dotted.

How to get here

By limited express of JR, it takes about 20 minutes from Hakodate to Onuma-koen station.

Other Tourist Attractions in Southern Hokkaido

Otaru city Lake Shikotsu Lake Toya Mt. Usu volcano Showa-shinzan volcano Noboribetsu hot spring resort Cape Chikyu Shakotan Peninsula Niseko ski resort Mount Yotei Hakodate city Matsumae Castle Okushiri island

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