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Look at the trestle bent in this view. There's a house at street level right beyond trestle bent. Look up the hill above this house. Go up about 4/5 up hill. There is a light blue house with a deck on it's top floor. That house is on west side of ROW. Tunnel portal is right next to this house but down a little lower I believe. There was a sweeping curve out of the tunnel onto the trestle--it wasn't a straight shot.