Planum Boreum is surrounded by large fields of sand dunes spanning from 75°N to 85°N. These dune fields are named Olympia Undae, Abalos Undae, Siton Undae, and Hyperboreae Undae.
Planum Boreum je obklopená veľkými planinami piesočných dún na súradniciach od 75°S po 85°S. Tieto dunové polia sa nazývajú Olympia Undae, Abalos Undae a Hyperboreae Undae.