The most northerly black smokers are a cluster of five named Loki's Castle, discovered in 2008 by scientists from the University of Bergen at 73°N, on the Mid-Atlantic Ridge between Greenland and Norway.
As chemineas negras máis septentrionais son un grupo de cinco chamadas Castelo de Loki, descubertas en 2008 por científicos da Universidade de Bergen a 73°N, na dorsal mesoatlántica entre Groenlandia e Noruega.