Beyond, The R.R., here does a switch back yet Rainbow Pass actually passes thru a tunnel of the heads of the divide. The arest wall is seen it Rainbow pass gizgiggy or be links into Pebble at the pass itself the road passes under the walls there double gates, I here saw donkey's milk caravans 4 miles with loads passing through. The mountains hill's here are rugged composed of granite, great formations of which hang on the hillsides. The route is built like granite tipped by a few feet of gray bricks raised into a rampart, would not last for gunnery