To get the gold, the people at that time had to dig holes in the ground to reach the goldore. So they made lots of shafts in the hills around the coast. This is a picture of an old shaft; look at the rusted rails on which the trolleys, full of ore (coming out of the mine) were pushed to some sort of crushingmachine.
When they were emptied, the men had to push the empty trolley back, into the mine again (if they don't do that they run out of empty trolleys, ain't it?)
There is light on the end of the shaft, because they dug the whole mountain behind it, away.
Sorry, this is not a very exciting picture, but not all of my photos can be spectacular.