Complex sentence: The crest of the range lies about 15 miles (24 km) east of U.S. Route 180, which traverses parallel to a section of the San Francisco River; the lower altitude smaller range, the Sierra Aguilada borders to the west of Route 180.
Split into simpler sentences: The crest of the range lies about 15 miles (24 km) east of U.S. Route 180, which traverses parallel to a section of the San Francisco River. The Sierra Aguilada, a lower altitude smaller range, borders to the west of Route 180.