The Conness Glacier is a glacier located on the steep northeast cirque on Mount Conness, east of the Sierra Nevada crest.Google Earth elevation for GNIS coordinates. and can be seen from Saddlebag Lake to the east. The glacier is the largest glacier in the Sierra Nevada north of Tioga Pass or Highway 120. In 2004, a study found that since 1900, Conness Glacier had lost half its surface area.