2015 Map of Sims Mountain

About this map

Sims Mountain and Castle Rock dominate the high-relief landscape along the border of Humboldt and Trinity counties. This 2015 survey details a remote section of the Six Rivers National Forest and Trinity National Forest, where the terrain is marked by dramatic elevation changes such as Big Slide and Devils Canyon. The drainage network is anchored by the South Fork Trinity River, fed by numerous tributaries including Mosquito Cr, McAlister Cr, and Grapevine Cr. Human activity in this wilderness is represented by a series of Forest Service routes and specialized landmarks like Waterbarrel Opening, Smith Opening, and Mule Bridge. These features, along with named peaks like Potato Hill and Bennett Peak, provide essential points of orientation for researchers tracking land use and resource management in the Northern California backcountry.