Phu Khiao-Wildlife Reserve

Phu Khiao is a true wildlife sanctuary (เขตรักษาพันธุ์สัตว์ป่า) — Thailand’s strictest protected-area category — not a walk-in national park. Day visitors can reach the headquarters and the Thung Kramang grassland by signing in at the Pang Muang checkpoint; anything further into the sanctuary, or an overnight stay, needs written permission from Department of National Parks headquarters in Bangkok, requested 15–30 days ahead. Entry costs 200 THB for foreign adults (100 THB for children) and 20 THB for Thai adults (10 THB for children).

Thung Kramang, about 20 km from the sanctuary office, is the one area open to casual day visitors without Bangkok paperwork — a wide grassland nicknamed Thailand’s “safari” locally for how easily animals show up from the road. Hog deer, sambar deer, and golden jackals move across the open ground, and elephants pass through too, though rangers ask visitors to keep their distance and stay in the vehicle rather than approach on foot. Surveys have documented around 111 mammal species and 419 bird species across the wider sanctuary, including tigers, leopards, gibbons, and the endangered white-winged duck — numbers that reflect how much of Phu Khiao lies well beyond what a day visitor will ever see.

Watch out: Don’t plan this as a spontaneous stop. Access beyond the headquarters area is genuinely gated, not a formality — arrive without a permit and you’ll be turned back from the interior, limited to Thung Kramang and the ranger-led trails near the office.

Three short trails (2–4 km) near the headquarters run with a ranger for a voluntary fee, and camping is allowed if you bring your own tent. There’s no food or fuel for sale inside the sanctuary, and mobile signal barely reaches past the headquarters, so arrive fully stocked. The terrain isn’t waymarked for casual hikers — a lost-hiker search here in past years is a reminder that Phu Khiao’s interior is genuinely remote rather than a groomed park circuit.

Insider Tip: Call the sanctuary office ahead of a visit, even for a day trip to Thung Kramang — confirming the checkpoint is open and the grassland accessible saves a wasted 20 km drive in from Pang Muang.

Visit in the cool season, November to February, for the most comfortable trail conditions and the best chance of wildlife activity. The sanctuary sits within Chaiyaphum province; a vehicle is essential, since public transport doesn’t reach the checkpoint or the headquarters. If the permit process puts you off, Tat Ton National Park and Sai Thong National Park are easier same-province day trips with no advance paperwork required.