Lake Onneto

Lake Onneto © Iry

Lake Onneto

Onneto Lake is a part of Akan National Park in Ashoro, Hokkaido. "Onneto" means old pond or big pond in the aboriginal Ainu language. The lake with a circumference of 2.5 km was created when the river was dammed up due to the volcanic eruption of Mt. Meakan-dake. Due to high acidity levels, fish can’t live in the lake but ezo salamander and crawfish can.
Since the surface of Lake Onneto beautifully changes color from light blue to green and dark blue, depending on the time of day or the season, the lake is also called Goshikinuma. Along with Okotanpe Lake and Shinonome Lake, the lake is considered one of the three major mystery lakes in Hokkaido. For this reason, there are a lot of trails and camping sites along the banks.
In the southeast part of the lake, 800m tall and 300m fall "Onneto Waterfall" is located. This waterfall is unique because it is made of manganese oxide. It is an Important Natural Monument and had been selected as one of the Japan's top 100 geological features. Be sure to drop by if you visit Onneto.


Train: from JR Kushiro Station, take a bus going to Akanko bus terminal, get off at the last stop. From there, 20 minutes by taxi.
Car: Ashoro IC on Doto Expressway.

Image Gallery: Lake Onneto

Description: Lake Onneto

Sights Lake Onneto (オンネトー)
Address Hokkaido, Ashoro-gun, Ashoro-machi, Moashoro, Onneto
Phone / Fax Phone: 0156-25-6131
Duration 90Minutes
Recommended Season
Spring (March - May)
Summer (June - August) Autumn (September - November) Winter (December - February)
Recommended target Family Groups Child (ages 7-17) Adult (ages 20+) Single traveller

Map: Lake Onneto