One morning I arrived at the quarry and saw from a distance two young foxes playing on the conveyor belt. One ran back to the top of the conveyor belt and then started to walk back down it, stopped and sat down. After a few seconds it started to slide down the conveyor belt using its front paws to drag it forwards.They were attracted to the conveyer belt because it was a playground to them. I have not seen this type of behavior amongst free living wild animals and I was really surprised and pleased to witness and capture this unusual event.