KRABI, THAILAND - 2013/11/09: Panorama of the Tiger Cave on Koh Lanta Island near Klongjak Waterfall. (Photo by Olaf Protze/LightRocket via Getty Images)

LightRocket via Getty Images

Tham Seua

Ko Lanta


Reached via a signposted track heading east off the national park headquarters road, 2km south of Hat Khlong Nin, Tham Seua has interesting tunnels to explore via guided one-to-two-hour tours (with headlamps).