911-7820 - A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe
911-7819 - A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe
911-7818 - A boulder of millstone grit on Ilkley moor with a perfect circular hole probably formed by a large inclusion weathered out of the bedrock, West Yorkshire, England, United Kingdom, Europe