. Ahlefeldt submitted her work to the annual Autumn Salon of Danish artists (
Kunstnernes Efterårsudstilling) from 1929, but her work was not accepted until 1936, when she exhibited two naturalistic portraits. Soon after this, Alfelt's painting style shifted to a completely abstract idiom of meditative and colorful prismatic compositions. Alfelt was involved with the major avant-garde art movements in Denmark from the 1930s through the 1950s. She took part in
Linien (The Line, 1934–1939), the artists' collective and art journal that was the first conduit of French Surrealism to Denmark. Under the German occupation of Denmark during World War Two, Alfelt was an integral component of Helhesten (The Hell-Horse, 1941–1944), the artists' group and art journal,
Helhesten, co-founded by
Asger Jorn as a harbinger of experimental art and implicit cultural-political resistance. She was also an important member of CoBrA (1948–1951) after the war. Alfelt's work explored motifs such as spirals, mountains, and spheres, which she linked to expressions of "inner space". Alfelt was directly inspired by nature, specifically mountains, which she sought out on her many travels, such as her trip to
Lapland 1945 and Japan in 1967. In addition to paintings she also produced several
mosaics. She was awarded the
Tagea Brandt Rejselegat in 1961. ==Notable artworks==