Deep in the Thai highlands, a small cave revealed that hunter-gatherers were cultivating plants 10,000 years ago, changing our understanding of human innovation.
A Hoabinhian Habitation
Spirit Cave, or Tham Phee Maen, is at an elevation of 650 meters on a hillside overlooking a stream in northwestern Thailand. In 1966, archaeologist Chester Gorman excavated the site, uncovering a thin but significant archaeological deposit just 75 cm deep. Radiocarbon dating of charcoal and other remains shows the cave was occupied intermittently between about 12,000 and 7,000 years ago. The people who lived here belonged to the Hoabinhian, a widespread hunter-gatherer culture of Southeast Asia.
Gorman’s excavations revealed a toolkit typical of this culture. The primary artifacts were stone tools made from coarse-grained quartzite river pebbles. These include large, unifacially worked pebble cores known as sumatraliths, utilized flakes, and grinding stones. In the uppermost, most recent layer, a few polished stone adzes and small slate knives appeared, along with cord-marked pottery sherds. The meticulous recovery of materials also yielded the first small animal bones identified from a prehistoric site in Thailand, including remains of sambar deer, pigs, monkeys, and palm civets.
Seeds of Debate
The most important finds from Spirit Cave are its ancient plant remains. Gorman identified several species, including almond (Prunus), betel (Areca), candlenut (Aleurites), pea (Pisum), bean (Vicia), bottle gourd, and cucumber. Based on this evidence, he and project director Wilhelm Solheim proposed that the cave's inhabitants had "an advanced knowledge of horticulture." This claim was substantial, suggesting plant cultivation in Southeast Asia began thousands of years earlier than in the Fertile Crescent of the Middle East, long considered the sole origin point of agriculture.
This interpretation, however, has been a subject of scientific debate for decades. Later analyses by ethnobotanists argued that the recovered seeds showed no clear morphological differences from their wild relatives. The presence of these species does not definitively prove they were domesticated; they could have been gathered from wild plants in the surrounding forest. The current consensus is that the evidence from Spirit Cave points to a sophisticated hunter-gatherer society that exploited a broad spectrum of wild plants, rather than one engaged in early agriculture. The findings show the connection between intensive wild plant gathering and the first steps toward deliberate cultivation.
💡Fun Facts
The local name, Tham Phee Maen, can be translated as "Cave of the Spirits of Men."
The Hoabinhian techno-complex is named after the Hòa Bình province in Vietnam, where the characteristic stone tools were first identified.
Spirit Cave is one of several significant prehistoric sites in the area, including Banyan Valley Cave and Steep Cliff Cave, which were also investigated by Gorman.
Some Hoabinhian tools, known as sumatraliths, are made from river cobbles flaked on only one side to produce a cutting edge.
The site is in a remote natural area and does not have official opening hours; access is possible during daylight hours.
Admission
Free.
Accessibility
Reaching the cave requires a strenuous, multi-hour trek through steep, forested terrain and is best undertaken with a local guide. The trail can be overgrown and hard to find.
Spirit Cave (Tham Phee Maen) Hoabinhian SiteMae Hong Son, Thailand