The Hall Natural Area or Harvey Monroe Hall Natural Area is a region on the eastern border of Yosemite National Park in California. The area is located about 1.25 miles (2.0 km) northwest of Tioga Pass, and is approximately four miles (6.4 km) long from north to south and 2.75 miles (4.4 km) wide at its widest point. It lies completely within the Inyo National Forest.[1]