Chichibu-Tama-Kai

Chichibu-Tama-Kai National Park protects 126,259 hectares of mountainous terrain less than 100 kilometers west of Tokyo, making it one of Japan's most accessible wilderness areas for the nation's urban population. The park encompasses rugged peaks reaching over 2,000 meters, deep forested valleys, limestone caves, and pristine rivers that have carved spectacular gorges through ancient rock formations. Established in 1950, Chichibu-Tama-Kai straddles four prefectures (Saitama, Yamanashi, Nagano, and Tokyo) and represents an important refuge for montane forest ecosystems and wildlife within Japan's densely populated Kanto region. The park's diverse geology, from limestone formations to volcanic rocks, supports varied plant communities and provides outstanding recreational opportunities for hiking, climbing, and nature appreciation.