Yoshimi Hyakuana Hikarigoke Hasseichi, Natural monument and habitat in Yoshimi, Japan.
Yoshimi Hyakuana is a burial site underground with roughly 219 chambers carved into volcanic tufa rock. These rooms form a network of passages beneath the ground, with varying sizes and shapes throughout the site.
These graves were built in the late Tumulus period, between the 6th and 7th centuries as an important burial ground. The site gained national historical monument status in 1923, recognizing its archaeological value.
The chambers show how ancient people honored their dead and what these underground spaces meant to their communities. You can see on the walls how carefully each chamber was shaped to give the deceased a respectful resting place.
The site is easy to reach and has marked paths for visitors to walk between the different chambers. It is wise to wear good shoes and take time to explore, as the underground passages can be narrow and winding.
The area hosts colonies of Hikarigoke, a rare glowing moss that earned national natural monument status in 1928. The moss creates a soft glow in the dark chambers, giving the place its name and making it an unusual blend of archaeological and natural wonders.
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