South Thailand has many limestone hills. I've been to Krabi more than 10 times and always enjoy the landscape, of tower karst, sheer limestone hills along the coast, and karst islands sticking out of the sea.
And of course there are caves. One of the most famous is Tham Phra Nang off Ao Nang.
Rock climbing is very popular on these hills. And many people enjoy canoeing through the caves.
Khao Khanab Nam seen from Krabi town -
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