Yomase Onsen is located on the south-eastern slopes of Mt Kosha in Yamanouchi town, in the north-eastern region of Nagano Prefecture.
Yomase Onsen is one of five connected ski hills on the slopes of Mt Kosha. A number of years ago they were branded as 'Mt Kosha' and joint lift tickets were available.
In recent years that plan has seen many changes, bringing us to the 2020-2021 season. This season a joint Yomase Onsen and neighbouring
X-JAM Takaifuji is available. However, the previously available 1 day and 2 day ticket known as 'Kita Shiga' - also valid at nearby Ryuoo Ski Park and Komaruyama - will not be available during the 2020-2021 season. The lower Number 5 lift at Yomase Onsen will also be rested for the season.
The other three ski areas on Kosha -
Kita Shinshu Kijimadaira and
Makinoiri Snow Park - are now both operating independently, while
Yamabiko-no-oka continues to be closed.
In the regions surrounding Mt Kosha, Myoko and Madarao Kogen are to the west, Nozawa Onsen is to the north and Shiga Kogen is to south west.
Nagano Prefecture is located in the Chubu region of the main island of Honshu. Most of the Northern Alps, Central Alps and Southern Alps are located within Nagano (along with neighbouring prefectures). Nagano has the second highest number of ski and snowboard resorts in all of Japan and they are spread around the whole prefecture. Nagano city and many of the major ski resorts are located in the northern region.