From 1987 to 1992, I designed a xc loop route around the granite glaciated heart of the Trinity Alps at the 8000ft level. I took many hikes to high points, studied maps, and was able to solve 75 percent of the High Route. In 1993 I hiked the loop in nine days, with layovers at Boulder and Mirror Lakes. There are many dangerous ledges and cliffs to cross. It is a very difficult xc route for only the experienced adventurer, with many challenges to solve every day. Hike it, but at your own risk. The redlines show most of my xc adventures from 1987 to 2003, but not all. The labels on the passes are my own names for them, and won't show up on usgs maps.