person digging in a large pit

person digging in a large pit. The pit is surrounded by tall, layered earthen walls. The person, dressed in dark clothing, is using a pickaxe to break up the sandy ground. There are a few small piles of dug-up sand visible in the pit. The pit itself is a light sandy color. The surrounding area is covered with dry grass and some low-lying vegetation. The video is shot from a higher vantage point, looking down into the pit.