Bat Observatory (Bat Exodus)
Bat Observatory, Deer Cave
An open-air viewing deck outside the Deer Cave entrance, where millions of bats stream out at dusk in spiraling ribbons to hunt, a truly spectacular sight.
Each evening, roughly 17:00–18:30, the millions of wrinkle-lipped bats roosting in Deer Cave fly out in flocks to feed, forming twisting spiral ribbons in the air. The exodus comes in waves that can last over half an hour, while bat hawks lurk nearby waiting to prey on them. A seated viewing platform stands outside the Deer Cave entrance, and visitors typically wait there after seeing Deer Cave and Lang Cave. Timing and numbers depend on the weather, and bats may not emerge at all, or only a few, when it rains. The platform is free and included in park admission. After dark, walk back to headquarters along the boardwalk, and bring a flashlight and insect repellent.
Opening hours
About 4:30–6:30 PM
Nearby sights
- Lang Cave
- Deer Cave
- Mulu Canopy Skywalk
- Paku Waterfall
- Garden of Eden Valley Walk
- Park HQ & Night Walk
- Lagang Cave (Fast Lane)
- Batu Bungan Penan Village