Two national parks, one rarely visited province

Chaiyaphum is genuinely one of Isaan's lesser-visited provinces, and that obscurity is part of what makes it worth the detour. Two separate national parks sit within easy reach of each other here — Phu Laen Kha, home to Thailand's most famous rock formation, and Pa Hin Ngam, with its own strange sandstone and seasonal wildflower fields — giving a single weekend genuine variety across a rural, unhurried corner of the northeast.

Mo Hin Khao: sandstone pillars 195 million years in the making

Inside Phu Laen Kha National Park, established in 1996, sits Mo Hin Khao — genuinely nicknamed "the Stonehenge of Thailand" for its resemblance to the famous English site. Five sandstone pillars, each around twelve metres tall, were formed from sedimentary rock laid down between 195 and 65 million years ago, later folded, fractured and worn down by rain and plate movement into their current striking shapes. Local tradition holds that a white light appears among the pillars on Buddhist holy nights — the full moon, and the eighth and fifteenth days of the waxing moon — giving Mo Hin Khao its Thai name, which translates roughly to "white stone hill."

Pa Hin Ngam: a different park, a different kind of strange

A short drive away, Pa Hin Ngam National Park — first protected in 1986 and formally established in 1994 — holds its own distinct rock formations at Lan Hin Ngam, shaped by the same long geological processes but genuinely different in character from Mo Hin Khao's pillars. The park's real seasonal highlight arrives each June, when fields of Dok Krachiao, or Siam tulips, bloom across the forest floor in a carpet of vivid pink — a display that draws visitors specifically for that narrow rainy-season window.

Sandstone pillars 195 million years in the making, genuinely nicknamed Thailand's own Stonehenge, sitting quietly in a province most travellers drive straight past on their way somewhere else — Chaiyaphum rewards exactly the kind of curiosity that skips the obvious route.

Clifftop views across two parks

Both parks offer genuinely dramatic viewpoints worth building a hike around. Pa Hin Ngam's Sut Phan Din sits at 846 metres on the edge of the Khorat Plateau, looking directly down into the Sonthi River valley and the Sap Langka Wildlife Sanctuary beyond. Phu Laen Kha's own Pha Hua Nak, not far from Mo Hin Khao, offers a similarly striking outlook back across Chaiyaphum town below, with the cooler air at altitude a welcome contrast to the lowland heat.

Who this weekend is for

This route suits travellers drawn to geology and genuinely unusual rock formations, along with anyone wanting a rural, unhurried province rarely covered by standard Isaan itineraries. It particularly rewards photographers, given both the pillars' distinctive shapes and the province's clifftop viewpoints, and those visiting in June specifically for Pa Hin Ngam's tulip season add a rare seasonal dimension most visitors miss entirely.

What to look out for

Time a June visit specifically if the Siam tulip fields matter to your trip, since the bloom window is genuinely narrow. Wear proper walking shoes for both parks' plateau terrain, which can be uneven and exposed to full sun. The two parks sit a genuine drive apart rather than side by side, so plan a full day for each rather than trying to combine them into one rushed visit.