1-4Excavation survey in the Heisei period
Archaeological excavations around Fukui Cave have also been conducted.
In the survey at the parking lot site, excavation team hit the bedrock about 2.5 m below the ground surface. Unlike the cave, the parking lot contained a good number of huge, buried basalt rocks.
Research on the bedrock riverbed has revealed that the course of the river was in the direction of the East rock shelter at Fukui Cave in the Jomon period.