1990 Map of Hogback Ridge

About this map

Lassen National Forest terrain dominates this Shasta County survey, where volcanic activity has left a distinct footprint across the landscape. Extensive lava flows are documented throughout the western half of the map, illustrating the geologic character of the region near Sixmile Hill. The northeastern corner is defined by the steep descent of the Hat Creek Rim, while the Pacific Crest National Scenic Trail winds along this dramatic topographical edge, offering a high-elevation corridor through the timberland.