Sg,

I know where the town of Monte Cristo is . I know where mineral city is. There was a mine named Monte Cristo on the Sky. It had a board sign above it and went back into the hill maybe 50 Ft. or so. The sign disaaspeared in the 70's sometime and the mine shft was blown up. You can still see the remnants. The gravel has little geen specks of Marioposite in it on that section.