This section of map corresponds to the Mount Thompson 7.5 Minute Series USGS Topographic Map.
The dotted red line shows the ascent from South Lake to Bishop Pass, one of the most popular passes in the high sierra. The pass is the entry to King's Canyon National Park,...and, is often used by backpackers when looping through Evolution Valley.
Here is the link to the Inyo National Forest
Also, here is a link to the Summit Post page, John Muir Wilderness
Do a Google search for the town of Bishop, to find information on lodging, restaurants, etc.