【Potholes: Natural Molding in Saza river】 【自然の造形:ポットホール:吉井町】

 Have you ever seen “potholes” in Saza river? They can be seen on the riverbed of Saza river. They are cylindrical shape holes which were grinded repeatedly by small stones in cracks or depression of riverbed rocks. Most of them are concentrated around the upper stream area of school gate bridge of Yoshii junior high school. Some of them are pretty big and even longer than 3m. There are more than 640 potholes in total. What a rare forming in nature!

For more information: 詳しくはこちら(みさき道人“長崎・佐賀・天草etc.風来紀行)



#sasebo #佐世保 #echan #Eチャン #

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