2023 Map of Porphyry Peak

About this map

The White Knob Mountains dominate this high-elevation landscape within the Challis National Forest, where the terrain transitions toward the Pioneer Mountains to the south. This 2023 survey documents a remote network of trails and primitive roads that trace the drainages of the East Fork Big Lost River. Notable landmarks such as Castle Rock and the namesake Porphyry Peak provide vertical orientation for hikers and backcountry researchers. The mapping of the Grant Creek Trl and the East Fork Boone Creek Trl illustrates the modern recreational usage of these historical forest corridors. Along the southern edge, the Copper Basin Road - FS 135 Trl and E Fork Rd follow the river valley, marking the primary human access points into this protected wilderness area.