This is the second part of the tour, and involves travelling about 6.5 km from Than Bok Khorani National Park, to the edge of the sea.
Also see;
Again there is an ample car park, and a shop on the left which gives access to the boats. You have two choices: (i) use kayaks to paddle yourself, with a guide in another kayak, or (ii) take a longtail boat. I believe prices are fairly fixed, but you may be able to negotiate. From reviews I have read the kayakers may get to see more than the boat riders, but I have not tried it! The first visit is to Tham Lot, which is a cave right through the limestone so that the boats can sail straight through.
The stalactites are very impressive, and people like to imagine that some resemble figures such as mermaids.

