The Mozu Kofungun burial mounds are a cluster of keyhole shaped tomb complexes that were constructed during the Kofun period in present-day Sakai, located in the Osaka Prefecture of Japan.
The church was carved into a limestone cliff along the Dronne valley, overlooking Aubeterre-sur-Dronne sometime during the 8th century AD, with further expansion by Benedictine monks during the 12th century.