2023 Map of North Sister

About this map

North Sister and Mid Sister dominate this high-elevation landscape along the boundary of Lane and Deschutes counties. This portion of the Cascade Range is defined by its glacial and volcanic features, from the massive Collier Glacier and Hayden Glacier to distinct formations like Collier Cone and Four-in-One Cone. The presence of Craig Grave near the northern boundary serves as a rare human landmark in this alpine environment, which is largely protected within the Three Sisters Wilderness and Mount Washington Wilderness. A network of high-country routes including the Pacific Crest National Scenic Trail and Glacier Way Trail provides access to the Obsidian Cliffs and the meadowlands at Linton Meadows. The map captures a complex hydrological system where snowmelt feeds features such as Obsidian Creek and White Branch, illustrating the transition from active glaciers to the forested slopes of the Willamette and Deschutes National Forests.