Situated 5km southwest of Bau, the Wind Cave is essentially a network of underground streams. Unlit boardwalks in the form of a figure eight run through the caves, allowing you to wander along the three main passages (total length: 560m) with chittering bats (both fruit- and insect-eating) swooping overhead. In January and February the cave may close if the water level is too high.
Near HQ, 300m from the cave entrance, you can cool off with a refreshing swim in the waters of Sungai Sarawak Kanan.
Flashlights/torches are available for rent (RM3) – if you get a feeble one, ask to exchange it. No food is sold at the reserve itself, though there is a drinks stand.