The summit is the highest point in Tokyo is known as "cloud grabber mountain". Located within the Chichibu-Tama-Kai National Park at the border of Tokyo, Saitama, and Yamanashi prefectures. Is one of the Japan’s 100 most famous mountains and is easily accessed from central Tokyo. The hiking network stretch over 20KMs with many courses available. Most of them take considerable amount of time so it is common for lodging for the night. I wanted to finish the hike in a day, so I took the shortest distance up the summit and back from Kamosawa trailhead near Lake Okutama (Okutama-ko).