The Portneuf Range, which begins east of Blackfoot and extends southeast for 60 miles, is broken by the Portneuf River, which cuts through it at Lava Hot Springs. The northern section of the range begins along the Blackfoot River and gradually climbs up to the summits of North and South Putnam Mountains. Moving south, the crest undulates, reaching its highest elevation southeast of Pocatello at Bonneville Peak (9,278 feet). After being broken by the Portneuf River, the range again climbs steeply, reaching high points at Sedgwick Peak, Baldy Mountain and Cottonwood Peak. Sedgwick Peak (9,167 feet) is the highest point in the southern section and the second highest point in the Portneuf Range.

For information on traversing Bonneville, Snow Peak and Haystack Mountain, click on this sentence.




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[…] here at Idaho State University. The day was clear and cold as we started along the east face of the Portneuf Range. When we stopped to photograph the steam coming off the Portneuf River, the temps where hovering […]