Park at the large pullout before Tunnel 2. Walk west along the road and cross the bridge. Just before the tunnel, hop the wall on the right side of the road, and follow a trail back east. There are a couple options along this trail: You can continue all the way up to Highlander, or stay lower and parallel the creek to get to New River Wall. You'll pass a short cliff with 2 routes on it, Merlin and Dragonslayer. These are for some reason considered part of New River Wall, but to reach NRW proper, continue along the trail and find a fixed rope descent into the cave overhanging the creek with all the fixed draws and chalk.