Lake Shikaribetsu in Japan — Japan's Highest-Elevation Lake with Pristine Stars Overhead

Overview

Shikaribetsu Lake is a natural lake in Shikaoii, Kamikawa District, Hokkaido, positioned at Japan's highest elevation: 810 meters. Often called the "Heavenly Lake," it's the southernmost location of Daisetsuzan National Park, surrounded by virgin forest in serene solitude.

Observation Environment

Shikaribetsu's defining feature is the near-complete absence of artificial light. The nearest town center, Shikaoii, sits roughly 30 kilometers away, naturally preserving a low-light-pollution environment.

The 810-meter elevation thins the atmospheric layer, making starlight sharper. On favorable nights, the Milky Way reflects in the lake's surface—a magical sight. Darkness reaches Bortle Class 1, among Japan's limited darkest locations.

Best Seasons for Observation

Summer (July–September) offers ideal conditions. Mild temperatures enable extended observation sessions, and the Milky Way arcs dramatically overhead.

Winter hosts the "Shikaribetsu Kotan" ice festival, where you observe from the frozen lake surface—a unique experience. However, temperatures plunge below −20°C, requiring serious winter gear.

Access and Usage

Memuro IC on the Doto Expressway is about 45 minutes away. The lakeside has hot spring accommodations at "Shikaribetsu Onsen Hotel Fuusui," where you can stay overnight and enjoy stargazing throughout the night.

In summer, Shikaribetsu Nature Center offers guided night-watch tours with expert constellation commentary—ideal for beginners.

Stargazing Tips

The lakeside offers open spaces, particularly around the north shore parking area, perfect for observation. Tripod-mounted astrophotography benefits from lake-reflection compositions. However, bears do inhabit the region; avoid solo nighttime movement. Carry bells and a light.