Routine patrol discovers unique cave in Thailand with 2,000-year-old rock art during forest patrol
A routine patrol in northern Thailand resulted in a surprising archaeological discovery. Rangers at the Phu Khat Wildlife Sanctuary found a previously unknown cave decorated with prehistoric rock art estimated to be around 2,000 years old, revealing a site that had remained hidden deep in the forest.
The find occurred between August 14 and 16, 2025, while rangers were carrying out anti-poaching and wildlife monitoring missions in the Khwae Noi river basin. What began as an ordinary task quickly turned into an archaeological revelation after the team stumbled upon a sandstone cave displaying clear signs of ancient human activity.
Named Tham Ta Kueng, or Ta Kueng Cave, the area has not yet been the subject of in-depth archaeological studies. Authorities called the discovery notable, noting that the current assessment is based only on initial observations and will need confirmation through future investigations.
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Remote cave reveals ancient secrets in Thailand
The cave is located in a dense area in the forests of Nakhon Thai District, Phitsanulok Province. Park rangers were patrolling the forest regions of Khun Nam Ton, Ang Khon Kaen and Tam Takung when they unexpectedly encountered her during their routine environmental conservation work.
In a translated statement, the Department of National Parks, Wildlife and Plant Conservation said a closer inspection revealed evidence of human presence at the site. The sandstone walls are covered in prehistoric engravings that include geometric shapes and unique motifs, described as “three-finger patterns.”
Based on these early observations, officials believe the cave may have been occupied approximately 2,000 years ago, during Thailand’s prehistoric Metal Age. However, the absence of archaeologists at the site means that the proposed age is, for now, just a preliminary estimate awaiting confirmation.
Rock art displays unprecedented patterns in the region
The engravings drew attention because they did not resemble records found in other archaeological sites in northern Thailand. The uniqueness of the drawings suggests the existence of a culture or artistic tradition that may be different from those previously documented, opening new perspectives for the study of human history in the region.
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Mongkol Khamsuk, head of Phu Khat Wildlife Sanctuary, described the cave as a significant natural resource and an important cultural landmark. He emphasized that “further research will allow us to learn more about the stories of this land, its ecosystems and the people who may have lived here in the past.”
The cave’s isolated location likely contributed to its preservation over time. However, authorities acknowledged that this remote environment could make archaeological work difficult once research teams begin their investigations at the site.
Next steps to unravel the cave’s mysteries
For now, the cave has only undergone an initial assessment. Officials announced that archaeologists must carry out a series of scientific studies once they have access to the site. These investigations may encompass 3D mapping, pigment analysis, radiocarbon dating, contextual excavation and comparisons with other archaeological sites in the region.
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Thailand already has a vast collection of prehistoric cave sites. For example, caves at Mae Hong Son have revealed wooden coffins aged between 1,000 and 2,300 years, while other sites have featured Iron Age burials and prehistoric artifacts. Even given this rich context, officials noted that none of these discoveries resemble the engravings found inside Ta Kueng Cave.
The authors of the statement highlighted that “the following study should allow us to better understand the historical stories of the area, as well as learn about the nature and ecosystems of conservation forests, which are crucial to preserving the country’s natural and cultural resources.”
