The Conness Glacier is a glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

 located on the steep northeast cirque

Cirque

Cirque may refer to:* Cirque, a geological formation* Makhtesh, an erosional landform found in the Negev desert of Israel and Sinai of Egypt*Cirque , an album by Biosphere* Cirque Corporation, a company that makes touchpads...

  on Mount Conness, east of the Sierra Nevada crest. The glacier is situated at about 11,500 feet (3,500 m) and can be seen from Saddlebag Lake to the east. The glacier is the largest glacier in the Sierra Nevada north of Tioga Pass

Tioga Pass

Tioga Pass is a mountain pass in the Sierra Nevada mountains of California. State Route 120 runs through it, and serves as the eastern entry point for Yosemite National Park. It is the highest highway pass in California and in the Sierra Nevada. Mount Dana is to the east of the pass...

 or Highway 120

California State Route 120

State Route 120 , in northern California, runs between the Central Valley near Manteca, through Yosemite National Park, and ends at U.S. Route 6 in Mono County.-Route description:...

. In 2004, a study found that since 1900, Conness Glacier had lost half its surface area.