• Onsen
  • Little-KnownGoodSpots
  • EasternArea

[Ike-no-Yu Onsen in Teshikaga] Mixed Bathing Open-air Bath on Shore of Lake Kussharo beside Matsuya Ryokan

July 15th, 2014

Ike-no-Yu Onsen

Ike-no-Yu Onsen (池の湯温泉) is a hot spring place in Teshikaga town located in the north part of Kushiro city. The hot spring gushes out at the lakeshore in the southwestern part of Lake Kussharo (屈斜路湖) in Akan Mashu National Park, and it is one of hot spring places around the Lake Kussharo. It is hard to find the Ike-no-Yu Onsen, and there are a parking lot and the open-air bath next to Matsuya Ryokan (松屋旅館 * Shut Down) after visitors turn at a sign board of the Matsuya Ryokan, and go straight. The distance is about 10 km away from Kawayu Onsen (川湯温泉), and restraunts, cafes, souvenir shops and convenience stores are not built.

Calm Lake Kussharo
Teshikaga, Lake Kussharo, Wakoto Onsen

The Ike-no-Yu Onsen was used by Ainu poeple originally. It has a long history, and Mr. Takeshiro Matsuura (松浦武四郎) visited here in 1858, so a stone slab inscribed with Takeshiro Matsuura is built, too. There are the Kawayu Onsen, Sanko Onsen (三香温泉), Sunayu Onsen (砂湯温泉), Wakoto Onsen (和琴温泉), Kotan Onsen (コタン温泉) and Nibushi Onsen (仁伏温泉) around here, and various natural open-air baths can be enjoyed throughout the year. Cherry blossoms can be enjoyed in a spring, Fresh green and the canoe can be enjoyed in a summer, fall foliage can be enjoyed in an autumn, and whooper swans can be watched in a winter.

Lake Kussharo

Lake Kussharo (屈斜路湖), the largest caldera lake in Japan, is in Teshikaga town located in the northeastern part of Lake Akan (阿寒湖) and is the second largest caldera lake in the world, too. The perimeter of the lake is about 57 km. There is Nakajima island in the middle of the lake, but a landing is prohibited. The cracks called "Omiwatari (御神渡り * cracks that form in the ice on the Lake)" occur in a winter. Those are the largest size in the Japanese freshwater lake, and the ice cracks seem to occur for 10 km in total length and 2 m in height. In addition, it is famous as a wintering spot for whooper swan, and they rest their wings on the surface of the non-frozen water by hot springs melting. Article is here

Wakoto Peninsula
Lake Kussharo

Wakoto Peninsula

Wakoto Peninsula (和琴半島) is only peninsula extending out the Lake Kussharo in the southern side of the Lake Kussharo. A scenic-viewing trail that tourists can make a round trip on the peninsula for approximately 1 hour is built. The min-min-zemi cicada (ミンミンゼミ) inhabit here, they do not inhabit further north than the Lake Kussharo and are designated as a special natural treasure in 1951. The facilities are substantial, too, and there are Wakotohanto-Kohan Camping Ground (和琴半島湖畔キャンプ場), hot springs, a souvenir shop, a restraunt, a boat for hire, a restroom. Admission free . A parking lot is free of charge. It is said to be a sightseeing base of the Lake Kussharo. Article is here

Wakoto Peninsula
Lake Kussharo

List of Day Trip Onsen

Visitors can take a day trip bath at the Ike-no-Yu.

Autumn Leaves around Lake Kussharo
Teshikaga, Lake Kussharo, Wakoto Onsen


Ike-no-Yu is a natural open-air bath on the lakeshore, and is popular for a good sense of openess. Bathers can forget daily life. It opens for 24 hours, and the sunset seems to be beautiful early in the evening. Starry sky may be beautiful, too. An entrance fee to the bath facility is free of charge.

Monument Looks Like Crawfish
Ike-no-Yu Onsen in Teshikaga Lake Kussharo
Other Side. Parking Lot in Depths
Ike-no-Yu Onsen in Teshikaga Lake Kussharo

There is 1 mixed bathing open-air bath. This is a pond with about 15 m in diameter, and is the size that about 20 people can take a bath. The hot spring gush out from the bottom of the pond without oxidizing, 100% natural fresh free flowing hot springs can be enjoyed.

Bath Like Round Pond
Ike-no-Yu Onsen in Teshikaga Lake Kussharo

The hot springs are unexpectedly hot, and water temperature is around 40 C. Bathing is comforatable only in a summer, but except the season, I think that it is too cold. When I visited here, few algae floated on the surface of the hot springs, and the hot springs looked considerably clean. But watch your steps, because moss grow on the surface of pebbles that spread all over the bottom of the bath, and those are very slippery.

Hot Springs Flow Steadily to Lake Kusharo
Ike-no-Yu Onsen in Teshikaga Lake Kussharo
Depth of Around 1 m
Ike-no-Yu Onsen in Teshikaga Lake Kussharo

The hot springs are simple hot spring, and are clear and colorless and have neither taste nor smell. Dressing rooms for men or women are built beside the pond. The bathers can take a bath in wearing swimsuits or with a bath towel covering body, but a lot of Japanese men take a bath withhout wearing anything. I guess female bathers are too shameful to take a bath without wearing somtheing. By the way, a use of shampoo and soap is prohibited because water of the lake is polluted.

Dressing Rooms
Ike-no-Yu Onsen in Teshikaga Lake Kussharo

In a winter, whooper swans and deers gather around the open-air bath. When I visited here, a deer ate dried grass. The grass is not frozen by steam, so here is really useful by wild animals.

Winter Ike-no-Yu
Ike-no-Yu Onsen in Teshikaga Lake Kussharo
Winter Ike-no-Yu
Ike-no-Yu Onsen in Teshikaga Lake Kussharo
Deer Eat Dried Grass
Ike-no-Yu Onsen in Teshikaga Lake Kussharo
Lake Kussharo in Winter
Ike-no-Yu Onsen in Teshikaga Lake Kussharo

Atmosphere of Ike-no-Yu Can Be Watched on Youtube

Movie of Ike-no-Yu Onsen

Movie of Ike-no-Yu Onsen in Winter

Types of Hot Springs Simple hot spring
Water temperature of Hot Spring Source 38 C
ph -
Indications Neuralgia, Muscular pain, Arthralgia, Rheumatism, Gastrointestinal disease
Contraindications Acute disease(when there is the heat in particular), Active tuberculosis, Malignant tumor, Severe heart disease, Respiratory failure, Renal insufficiency, Hemorrhagic disease, High anemia, Other diseases during condition of a patient progress generally
Indications of drinking Not drinking
Facilities Mixed bathing open-air bath(1)
Entrance fee to the bath facility Free of charge
Business hours Open 24 hours
Regular closing day Open all year round
Parking lot A parking lot is provided (10 cars)
Telephone number -
Home page Home page is here
Mapcode 638 057 669*86

List of Accommodations

Refer to following websites for the accommodations around Ike-no-Yu Onsen. You can get information regarding online reviews and photos.

Gasthof Papilio(ガストホフ ぱぴりお)

A page of Secret Onsen in Hokkaido is here

Secret Onsen in Hokkaido

A page of Akan Mashu National Park is here

Akan Mashu National Park