sentences:  Interstate 70 begins at an interchange with Interstate 15 near Cove Fort.Heading east, I-70 crosses between the Tushar and Pahvant ranges via Clear Creek Canyon and descends into the Sevier Valley, where I-70 serves Richfield, the only town of more than a few hundred people along I-70's path in Utah.Upon leaving the valley near Salina, I-70 crosses the Salina Summit and then crosses a massive geologic formation called the San Rafael Swell.