2024 Map of Mastodon Mountain

About this map

The Saint Joe Wild and Scenic River corridor anchors the southern edge of this Idaho landscape, where the small settlements of Hoyt and Ethelton sit along the riverbanks. This area within the St. Joe National Forest is defined by high-elevation peaks and narrow drainage gulches. The terrain is marked by a series of triangulation stations and lookout points, including Dunn Peak Lookout Ohv Tri and Prince Peak Tri, suggesting a history of fire observation and surveying across the St. Joe Mountains. Numerous waterways such as Slate Creek and Prospect Creek carve through the steep topography, feeding eventually into the Saint Joe. A network of forest development roads, including Nat For Dev Rd 225, provides access to these peaks, reflecting the region's management for timber and recreation.