2018 Map of Four Corners Rock

About this map

Six Rivers National Forest and Mendocino National Forest meet in this high-elevation landscape of the California Coast Ranges. The terrain is defined by a series of prominent peaks and ridgelines, including Brush Mtn, Round Mtn, and Big Butte, which rise above the headwaters of the N Fork Middle Fork Eel River. The drainage pattern is complex, with Willow Cr and Antone Cr carving deep basins like Clarks Basin. Small alpine water bodies, specifically Antone Lake and Swan Lake, provide critical reference points for navigation in this forested environment. The map documents numerous rocky landmarks such as Four Corners Rock, Mikes Rock, and Washington Rock, alongside grazing or meadow areas like Pfeiffer Flat. This geography illustrates the remote timber and range lands where the boundaries of Trinity and Mendocino counties converge.