Abstract The House Range is one of the principal ranges in western Utah (Fig. 1). It trends north-south for 60 mi (100 km)along the west edge of the Sevier Desert and lies 40 mi (65 km) west of Delta, Utah. The range has an asymmetric profile Its eastern slopes, formed mostly on dipslopes of Cambrian strata, rise gradually up from the Sevier Desert floor; its western face, formed by block faulting, rises abruptly from the floor of Tule Valley (also known as White Valley) at an elevation of 4,400 ft (1,300 m) to its highest point, Notch Peak, elevation 9,655 ft (2,943 m). The northwest face of Notch Peak forms one of the tallest sheer cliffs in the west. Delta, an irrigation-farming community situated in the center of the Sevier Desert, is the nearest source of gas, food, and supplies. U.S. 6-50 cuts southwestward from Delta to cross the southern part of the House Range at Skull Rock Pass. Graded gravel roads extend the entire length of the range on either side; roads cross the range only at Skull Rock Pass, at Marjum Pass in the middle, and at Death (Dome) Canyon a few miles north of Marjum Pass. People planning to visit the House Range should inquire in Delta about road conditions. Although most of the time the main gravel roads are suitable even for passenger cars, after storms these roads may be washed out and passable only with fourwheel-drive vehicles.