Gergeti 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 southeastern slope of Mt. Kazbek in the Kazbegi District of Georgia

Georgia (country)

Georgia is a sovereign state in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded to the west by the Black Sea, to the north by Russia, to the southwest by Turkey, to the south by Armenia, and to the southeast by Azerbaijan. The capital of...

. The length of the Gergeti glacier is 7.1 km (4.4 mi) and its surface area is 11 km² (4.2 sq mi). The tongue of Gergeti descends to 2900 metres (9,514.4 ft) above sea level. Most of the glacier is located within an old and eroded volcanic caldera

Caldera

A caldera is a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption, such as the one at Yellowstone National Park in the US. They are sometimes confused with volcanic craters...

, where, at the edge of the caldera's northern rim, rises the cone of Mt. Kazbek. The southern rim of the caldera where the glacier descends, is bounded by Mount Ortsveri. There is a meteorological station located on the left edge of the Gergeti Glacier at an elevation of 3650 m (11,975.1 ft) above sea level.