If you rent a motorcycle, you can find the less touristy spots in Krabi, such as the network of caves near Ao Leuk marked poorly, if at all. The nicest cave near Ao Leuk is Suanoi Cave, and it is not easy to find. It isn’t the largest, or the most visited, but it is cooler by maybe 20 degrees than the surrounding sunny jungle — the reason being that it holds a 100-meter-deep aquifer, and the breeze blowing across the water makes everything fresh and blissful.
It is both a local swimming hole and a source of local household water — there’s a pump shuttling it away to prove it. Given the amount of trash littering the water’s edge, the presence of ducks, monkeys and wading fishermen, I immediately think better of brushing my teeth with local tap water. Bottled water only from now on.
You can explore this cave without a headlamp thanks to the light pouring in above the aquifer, which is not true of many of the other caves in the region.
Nearby Phech Cave is good for exploration in the darkness, if you’re into that sort of thing.