Kaeng Krachan National Park
Sea of Fog, Waterfalls, Birding & Routes

🔄 Updated 21 Jun 2026

When you picture a big forest that's easy to reach from Bangkok, Kaeng Krachan is usually one of the first names that comes up. The park covers more than 2,900 square kilometres across Phetchaburi and Prachuap Khiri Khan, and it was inscribed as a natural World Heritage Site in 2021. The appeal here is the variety: in a single day you can splash around a waterfall, take a boat out on the reservoir, then head up to sleep under the stars on a mountaintop. But there are details to check before you go, because some spots open only in certain seasons and a few routes need you to book a vehicle ahead.

Entry fees and opening hours

Entry fees follow the Department of National Parks' standard rates, with separate prices for Thais and foreigners. The figures below are the latest available, but keep in mind the park can adjust them — checking with the gate or the park's official page before you travel is the safest bet.

• Thai nationals — adults 60 THB, children 30 THB
• Foreigners — adults 300 THB, children 150 THB
• Thai seniors (60 and over) — free
• Vehicle fee — around 30 THB extra per car
• Opening hours — roughly 06:00–18:00 (the Phanoen Thung route has its own shuttle slots — see the next section)

Phanoen Thung — the sea of fog people chase

Phanoen Thung is the peak many people picture first when they think of Kaeng Krachan. It sits about 50 kilometres from the park headquarters, roughly 1,200 metres above sea level. On winter mornings before dawn you'll see a white sea of fog blanketing the valleys, with only the mountaintops poking through. The most popular viewpoint is around the Phanoen Thung camp, which is why most people stay overnight and wake up at 5 a.m. to catch the fog.

The key thing to know first: the road up Phanoen Thung is a steep dirt-and-gravel track. The park allows only capable four-wheel-drive vehicles — sedans and two-wheel-drive SUVs aren't permitted — and you have to book a vehicle slot in advance. If you don't have your own 4WD, you can hire one with a driver from the park.

• 4WD hire, same-day round trip — around 1,600 THB per vehicle
• 4WD hire, overnight — around 2,000 THB per vehicle
• Where to stay — camp at the Phanoen Thung campsite; you can rent tents and bedding from the park and book through nps.dnp.go.th
• Winter, Nov–Feb — your best odds of fog, with cool weather, so pack warm clothes

Tho Thip Waterfall — 9 tiers deep in the rainforest

Tho Thip is the park's standout waterfall, sitting beyond Phanoen Thung along the same route. From the car park you walk in another 4 kilometres or so along a forest trail. The waterfall has 9 tiers, each with a clear pool, and the prettiest and most-photographed levels are the middle ones. The trail in is also a great birding and butterfly walk, since you move slowly through dense forest.

Ban Krang — paradise for birders and butterfly watchers

The Ban Krang camp sits along the road up to Phanoen Thung, and it's where birders and nature photographers set up base, because the forest here holds plenty of rare birds — including hornbills that sometimes fly out in flocks. Ban Krang is also famous for its butterflies, with more than 200 species recorded. The peak is butterfly season, roughly April to June, when butterflies gather in groups to drink from puddles along the roadside.

• Birding & butterfly stretch — from the Khao Sam Yot checkpoint to around kilometre 18, walkable along the road
• Best times — mornings before 10:00 and afternoons before 15:00
• Star birds — hornbills, great hornbills, plus several other rare forest birds that birders come to tick off
• What to bring — a zoom lens, binoculars, muted clothing, and the patience to stay quiet

Kaeng Krachan Reservoir — boating, swimming, fishing

If you'd rather skip the mountain, the reservoir side is an easy day trip. The dam holds back the Phetchaburi River, forming a wide lake of about 45 square kilometres ringed by green hills for a pretty backdrop. The popular activities are scenic boat trips over the reservoir, kayaking, and freshwater fishing, with resorts and waterside restaurants around the edges where you can sit and catch the breeze.

Routes — day trip or overnight

There are several ways to do Kaeng Krachan depending on the time you have. A single day works best for the reservoir side and some gentle nature. If you want the Phanoen Thung sea of fog, plan to stay overnight, since the mountain shuttle slots are limited and the fog is at its best before dawn. Below are two sample plans to adapt.

Before you go

• Book ahead — if you're heading up Phanoen Thung or staying overnight, reserve lodging and your vehicle slot through nps.dnp.go.th, especially on weekends and long holidays
• Check the closures — Phanoen Thung and Ban Krang close every year from Aug to Oct
• Phone signal — there's barely any signal up the mountain, so let people at home know beforehand
• Pack the essentials — drinking water, a flashlight, warm clothes, insect repellent, and a trash bag (carry your rubbish back out)
• Contact — the visitor centre at 032-772-311 or the Kaeng Krachan National Park official page