Complex sentence: Supai can be reached by hiking eight miles (13 km), descending 3,000 vertical feet (900 meters) from Hualapai Hilltop through the Hualapai Canyon, and the AirWest Helicopters service schedules flights from Hualapai Hilltop to Supai.
Split into simpler sentences: Supai can be reached by hiking, descending in elevation from Hualapai Hilltop through the Hualapai Canyon. Alternatively, the AirWest Helicopters service schedules flights from Hualapai Hilltop to Supai.