Place: Denmark, Music: Pantera – Planet Caravan (Black Sabbath cover)
Sort sol is a nature phenomenon in the marshlands in southwestern Jutland, Denmark, in particular the marsh near Tønder and Ribe.
Sort sol takes place in the hours just after sunset. The birds gather in large flocks and form huge formations in the sky just before they decide for a location to roost for the night. The movements of the formations have been likened to kind of a dance or ballet and the birds are so numerous that they seem to obliterate the sunset, hence the term “sort sol” (Danish for “black sun”).