Suddenly I came to this open site that was surrounded by these hills of very strange stones, which I named Mars hehe! I have no idea what kind of stone it is, or if this was a mining area that was common around here in the eighties.🚩📸
This 'red sand' is called Saibro here in Brazil. It used to be very common to use this type of material mixed with cement to build houses in the past. I’m not sure if it's still used, but I believe it’s not.
haa! then I had my doubt right, I mean it was possibly for mining or extracting it as a resource. Hey thanks for the info hehe I'm inexperienced in rock matters.