Tham Khao Maikaeo

Cave in Ko Lanta

Image by Andreas R. Shutterstock

Monsoon rains pounding away at limestone crevices for millions of years have created this complex of caverns and tunnels. There are cathedral-size chambers, dripping with stalactites and stalagmites, tiny passages you have to squeeze through on hands and knees, and even a subterranean pool. A local family runs hourly treks to the caves (with headlamps). The full trip takes two hours; sensible shoes essential. It's signposted off the main road from Hat Khlong Tob to the east coast. Phone ahead for timings.