So, that walk yesterday. The one with the massive anthill. That wasn't the only thing we saw. Right at the end of the walk we made our way over to the former smelting house. The whole area exists due to the copper and the mining and smelting of said copper. The mines have long since closed down and all that remains is a small museum. But you can still see traces of the copper industry everywhere.
As we got to the still standing smelting house, well, without a roof or rooms (see top photo), my friend also made her way over to the small beach close by and she showed me all those beautiful looking rocks that were there. They shimmered with all sorts of colours and looked like they had been dipped in oil.
There were large blocks that were probably used for building the hut/house that once stood there, we even saw part of a wall that was still standing, albeit only one block up.
But most of the rocks weren't actually rocks, it was slag. The remainder of the copper smelting that went on years and years ago. It was hard taking decent photos, but I think I got a few. It was a fascinating area and definitely one to go back to again.