Okama Crater Lake (Goshiki Lake)

Lake Gokako, situated at the highest elevation within the Zao mountain range, is a volcanic crater lake. Enclosed by three peaks – Kattadake, Kumano Peak, and Goshikidake – this lake spans a diameter of 325 meters and has a circumference of about 1 km. Due to varying factors such as season, time of day, weather, and temperature, the lake's water changes in colors, ranging from deep green, blue, to emerald green. This has earned it the moniker " Goshiki Lake (Five-Colored Lake)." The serene shimmer of the lake's surface contrasts sharply with the rugged volcanic walls, creating a profound sense of natural beauty.

Due to its location amid the 1,600-meter-tall mountains of the Zao Range, the area experiences abrupt temperature and weather changes. Even in summer, visitors are advised to bring warm clothing and rain gear, as weather can be unpredictable. The "Zao Mountain Summit Rest House" overlooks the lake, providing visitors with a panoramic view, dining options, and a souvenir shop.

A short 10-minute walk from Okama Crater Lake will lead you to the summit of Kattadake, where you can pay a visit to the sacred 'Kattarei Shrine Okumiya,' where the deity Zao Gongen is enshrined. Recognized as a power spot, many are drawn here to experience the energy emanating from the earth. Additionally, Zao is famous for its hot springs, making it a perfect place to relax and rejuvenate after a trek.