This is a slow cruise road, stop often and enjoy nature. Take your sun glasses off after the spring as this tunnel isn't lit. My friend who told me about this route didn't tell me about the tunnel. Keep your eyes peeled and you will see some big rocks with a ladder on them which you can climb on and jump into river. Riding along the river allows many opportunities to pull off to explore trails or take a dip. The day we rode was very hot and still, a cool drink and head dunk felt mighty good.
Make sure you stop to get a drink at the spring coming out of the pipe along the road (on Rt 77 before the Nada Tunnel). There are numerous rock formations and outcroppings to amaze and amuse.
Scenery I think this is one of the most unique rides I have ever been on.