Of course I am back in Japan yet again - Oct and Nov 2018 - Page 9 - 1034

This is not bricks or concrete, those lines are from hand tools used to cut out slabs of solid rock some how. I dont understand it at all.

Camera Details: SONY, ILCE-7M2
Settings: 1/60 at f/3.5, ISO 800, 28 mm
Date: 21 November 2018 Time: 11:55:37