2019 Map of Mount Jackson

Evidence of historical alpine surveying and naming is seen in the clustering of features like Tellurium Park and Tellurium Lake, alongside the prominent Holy Cross Ridge. The map illustrates the physical isolation of these high basins, where named passages like Missouri Pass and Fancy Pass provide the only breaks in the high ridgelines. From the Missouri Lakes to the meadows of Slim Jim Gulch, the sheet documents a wilderness area defined by its geological stature and preservation.