The fossilized shells are primarily from the Viviparus group of freshwater gastropods.
The distinct layer of shells is embedded in dark siltstone and mudstone, indicating a low-energy sedimentary environment 150 million years ago.
The site was discovered by local residents before being formally recognized for its paleontological significance.
Geologically, these strata are linked to the Khok Kruat Formation found across the Khorat Plateau.
The 150 Million Year Old Stone Shell Museum, locally known as Wat Tham Si Chomphu, houses a significant fossil bed featuring thousands of freshwater snail shells embedded in sedimentary rock layers. These fossils date back to the Jurassic period, offering geological evidence that this area of Nongbua Lamphu was once an expansive freshwater basin. The site features an outdoor display where these fossilized shells are visible directly within the natural rock formation. It is a community-managed site that emphasizes local paleontology and geological history. The museum grounds are integrated with a temple, blending religious architecture with archaeological preservation.
The main exposed rock face where the dense concentration of shells is visible in the sunlight.
Wear comfortable, slip-on shoes as you will likely be walking on uneven stone surfaces.
Bring a hat and water, as much of the fossil viewing area is uncovered and exposed to direct sunlight.
Visit during the morning to avoid the peak heat of the afternoon in the Isan region.
Do not attempt to chip or remove shell fragments from the rock faces, as this is a protected site.
Open daily, but access may be restricted during major temple religious ceremonies or festivals.
Dress modestly as the site is located within an active Buddhist temple grounds; cover shoulders and knees.
