Any notable changes to a part of the arena should be posted here. This can include but is not limited to area destruction, dead bodies, weapon or supply drops, and any other ways your character may have affected their environment.
You can also check this thread and others like it for a quick update on anything particular your character might notice on entering the area.
The Mine Shafts Status: Open.
Although the mine shafts have been mostly caved in, that does not mean that they are necessarily safe. The few remaining paths one could attempt to traverse all end in deep open pits. Any supporting scaffolding has long since been dismantled. It's a long way down.