Yes, I did find something way back the railroad tracks, but it wasn't a mine. It was the handmade cistern at an old homestead, made of small stones, that appears when the water recedes. I was walking back the railroad tracks, about 1/2 mile before the trestle where the small little bays and coves begin to emerge, when I saw to my right what is usually a sort of island with trees and vines etc. I walked over to it on dry ground ( about this time of year I think ) and something told me to get a stick and feel my way through the vines. Sure enough I poked through the vines into emptiness. I removed the vines carefully so I wouldn't fall and discovered a cistern about 8 feet deep and 5 feet across. I explored further and found the foundation of the old house as well. It was really quite a find. If I had fallen in, I would have been lost for a while before someone ( hopefully ) found me. Although the opportunity to eat my pork chop at home would have slowed the search efforts for a few days I am sure.