Bok Krai Waterfall

Bok Krai Waterfall in Ranong’s Kra Buri district drops through 11 tiers on the Ranong side of Thung Rayya-Na Sak Wildlife Sanctuary, a protected forest straddling the Ranong-Chumphon border. The lower five tiers, linked by a concrete walkway roughly 200 metres from the car park, flow year-round and hold clear pools deep enough for a proper swim. Getting further — tiers 6 through 11 — means a rough, unmarked natural trail and a 7-8 hour round trip, so most visitors stop at tier 5.

The lower pools are the main draw: granite-and-limestone terraces stepping down through jungle, with hornbills and other forest birds calling from the canopy. Monitor lizards sun themselves on the rocks near the pools, and the trail in is short and well-shaded, making the lower section manageable for most fitness levels rather than a serious trek. Because entry to the deeper tiers is genuinely difficult, the lower pools rarely feel crowded even on a weekend.

Insider Tip: Stick to tiers 1-5 unless you’ve arranged a local guide for the upper trail — the route beyond tier 5 has no signage and is easy to lose in dense forest.

Watch out: The walkway and rocks around the lower pools get slippery when wet from spray, so wear shoes with grip rather than flip-flops.

The falls sit inside a wildlife sanctuary rather than a national park, which changes the fee category but not the practical arrangements — pay the entry fee at the sanctuary checkpoint on arrival, open daily 09:00-17:00. Pack swimwear, a towel, and insect repellent for the walk in. Combine the visit with Kra Isthmus, the narrowest point of the Thai peninsula, a short drive away in the same district.