Sandstone Semas of Ban Pak Baeng and Ban Na Lak

Two Dvaravati-to-Lopburi-era sandstone sema stones stand about 4 km apart in Wang Saphung district, Loei — Ban Na Lak’s pair to the north, Ban Pak Baeng’s carved stele to the south, both on the banks of the Loei River. Semas mark the consecrated boundary of a temple compound, and these are among the northeast’s better-documented examples, dating roughly from the 7th to 12th centuries.

The two sites don’t match, and that’s the interesting part. Ban Pak Baeng’s stone, first recorded by researchers in late 1965, carries a lotus-flower pattern at its base and a stupa shape carved into the centre — clearly worked by someone intending decoration, not just a marker. Ban Na Lak’s stones are plainer: a pair of sandstone pillars with rounded, stupa-like knobs at the top and no carved detail at all. Seeing both side by side gives a better sense of how varied sema-carving was across otherwise similar Dvaravati-period communities than either site does alone.

Part of the original find isn’t here anymore. Ban Pak Baeng once had two matching steles; one was moved to the Khon Kaen National Museum in 1976 for conservation, leaving a single stone in place. That’s worth knowing before you make the trip — what’s on site today is half of what was originally documented, and the museum piece fills in detail the weathered field stone has lost.

This is a village-level archaeological site rather than a managed historical park — no ticket booth, no gift shop, and minimal signage beyond a marker identifying what you’re looking at. That’s honestly part of the appeal if you’re interested in Isan’s Buddhist archaeology beyond the well-trodden sites, but it also means facilities are close to nonexistent.

Insider Tip: Pair a visit with the Khon Kaen National Museum, where the missing Ban Pak Baeng stele is now on display — together the two locations tell a more complete story than either alone.

Watch out: There’s no staffed entrance and posted hours aren’t strictly enforced, so this is best treated as a daylight-hours stop rather than something timed to a schedule. Wear shoes suited to uneven village ground, and don’t expect English-language signage.

The sites are in Wang Saphung District, Loei province. For more of the province’s history, the Loei Museum and Phra That Si Song Rak are both worth combining with a visit here.