2012 Map of Twain

About this map

The E Br N Fork Feather River and the N Fork Feather River carve deep pathways through Plumas County, defining the settlement patterns of this mountain landscape. Along these corridors, small communities like Twain, Virgilia, and Paxton align with the railroad, where vital infrastructure such as Twain Siding and Tunnel Number 26 supported the movement of goods and people. The map reveals a history of local burial and recreation at the Big Flat Cem and Hallsted Campground, while numerous ravines like Schneider Ravine and Kingsbury Ravine underscore the complex drainage system feeding into the forks of the Feather River. Further north, the settlement of Seneca sits near Kirkham Ravine, marking a transition toward the more remote northern reaches of the quadrangle. Steep terrain features such as Eagle Rock and Rush Creek Hill stand as prominent landmarks above the river valleys, illustrating the geographic challenges faced by early builders of the Seneca Rd and Kingsbury Grade.