Mae Moei National Park

Mae Moei National Park follows the Moei River through Tha Song Yang district in northern Tak Province, where the river itself marks the border with Myanmar. Entry is 200 THB for foreigners and 40 THB for Thai nationals, and the park gate operates daily from roughly 08:00 to 17:00.

The easiest attraction to reach is Pha Thewa Waterfall, a 150-metre drop reached via a signed nature trail from the park headquarters — the trail stays cool and misty from the spray even on hot days. Smaller waterfalls further out, including Mae Salit Noi and Chao Doi, sit along quieter trails better suited to visitors who want to walk further and see fewer other people.

The bigger draw for most visitors is the sea of mist. Mon Pui Mok, a viewpoint reached by a 3.5-kilometre hike from headquarters, is usually visited as an overnight trip so you’re in position for the mist that fills the valleys at sunrise. Mon Kio Lom, about 12 kilometres from headquarters at 940 metres elevation, is a second viewpoint with its own sunrise and sunset outlook. Both are at their best in the cool season, November through February — the park itself advises against the deeper trails during the rainy months from May to October, when paths turn slick and streams rise.

Insider Tip: If the Mae Usu Cave is the reason you’re visiting, plan for the dry season. The cave follows the Mae Usu stream through three chambers of stalactites and stalagmites, but high water during the rains makes the approach impassable — November to April is the reliable window.

Watch out: This is a working border-area national park, not a day-trip resort. Facilities are basic, mobile signal is patchy on the trails, and the overnight viewpoint hikes need a guide arranged through the park office in advance.

The park covers around 185 square kilometres (roughly 115,800 rai) of forested hills along the border, and its own recommended way to see the highlights is a multi-day trekking route combining Pha Thewa Waterfall, an overnight camp at the Tung Ya Niranam grass meadow, and the sea-of-mist viewpoint at dawn. Camping at Tung Ya Niranam is bring-your-own-gear — tents, bedding, torches, food and water — since there’s nothing to rent at the site itself.

Mae Moei National Park sits well north of Mae Sot, the nearest town with full services, hotels and restaurants. If you’re already in the area, the border crossing itself and Rim Moei Market on the Thai-Myanmar frontier make an easy pairing with a park visit, along with the Thai-Myanmar Friendship Bridge. For the wider region, see the Tak destination guide.