The cedar trees were buried by a massive flood or landslide approximately 2,000 years ago, pushing the forest into the lowlands.
The trees are kept submerged in water-filled glass tanks to prevent decomposition, as exposure to air causes the wood to dry out and crumble.
Some of the excavated cedar trunks at the site measure over 2 meters in diameter.
The museum is built directly over the site where these specific ancient forests were discovered during harbor construction.
The local 'mirage' phenomenon, common in Uozu, is occasionally explained alongside the museum's geological context.
The Uozu Buried Forest Museum preserves thousands of ancient cedar trees that were naturally preserved in the sediment of the Katakai River delta over 2,000 years ago. The facility features the 'Underground Dome,' where visitors view enormous tree trunks in their original, water-submerged state to prevent oxidation and decay. These trees were once part of a massive forest that subsided into the bay due to crustal movements. Beyond the archaeological exhibits, the museum functions as a research center for coastal geography and geological preservation. The onsite 'Nekko Land' area provides interactive displays exploring the ecosystem's transformation. The museum serves as a unique repository of Japan's ancient botanical history, showcasing trunks that can reach up to two meters in diameter. It is one of the few places worldwide where large-scale wood remains are conserved in an aquatic, low-oxygen environment.
The viewing platform inside the Underwater Dome, which captures the submerged tree root systems under low-light conditions.
Walk the outdoor boardwalk to see the trees in their natural, preserved environment before entering the climate-controlled indoor dome.
Check the museum's website for seasonal special exhibitions that sometimes include temporary touchable wood samples.
Bring a camera, as the contrast between the dark, submerged wood and the bright, modern architecture provides excellent visual geometry.
Do not skip the outdoor exhibition space, as many visitors mistakenly focus only on the indoor museum building.
Closed on Tuesdays and during the end-of-year holidays.
Maintain a quiet volume inside the exhibition domes; avoid touching the water or the submerged wood exhibits.
