"The Shima Potholes are eight smooth holes that have formed in the riverbed of the Shima River.
The potholes have been created by thousands of years of erosion. The river's ebb and flow gradually circled stones along the riverbed and carved out these dips in the rock.

• From Takasaki Sta., about 40 min. on the JR Agatsuma Line to Nakanojo Sta.. From Nakanojo Sta., about 25 min. by bus.
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