We were faced with a dilemma. We knew we didn’t want to cross the trestle coming out of Oakman tunnel over Norris Lake because it is a bare-bones trestle, with no provision for any foot traffic. Although the line is, for all intents and purposes, dead, we were still leery of being on a rather exposed stretch of tracks. So, we walked back to our vehicle and drove around to Lone Mountain marina and hiked in to Sycamore tunnel from there. This north portal is at 36.378498, -83.562599. The tunnel, which has a bend, is around 740′ long. The south portal looks much like this one and, after 260′ or so, heads out over another narrow trestle.