Unna Räitaglaciären (also Knivglaciären) is located (67°58'N, 18°26'E) between the mountains Knivkammen and Vaktposten in the Kebnekaise massif. The accumulation area is heading NW and the tongue is directed to North. The glacier covers 1,7 km2 with a maximum depth of 140 m. The glacier is photographically well documented since the late 1930s. The glacier ended in a proglacial lake until the beginning of the 1980s when the lowermost part of the glacier was decoupled from the main glacier by a bedrock riegel exposed by melting

The glacier was included in the front monitoring programme in 1963 and during the 1990s a few years of mass balance was surveyed and the subglacial topography was mapped. A striking feature on the glacier is a major rockfall resting on the glacier just below the equilibrium line. The rocks cover 8.5x104 m2 and an attempt to date it using lichens suggest mid 19th century. Mass balance measurements were carried out by Huss during 3 successive years in the mid 1990s.

About 400 metres in front of the present terminus of the glacier there are three frontal moraines dating to 1900AD, 1700AD and 0AD/BC (Karlén 1973). A printed map at the scale 1:10 000 based on air photographs from 1980 exist.

Karlén, W., 1973: Holocene glacier and climatic variations, Kebnekaise mountains, Swedish Lapland. Geografiska Annaler 55A (1): 29-63.

Schytt, V., Cederstrand, P., Jonsson, S., 1963: Notes on glaciological activities in Kebnekaise, Sweden -1963. Geografiska Annaler 45 (4): 292-302.