[1]Archived 2007-03-10 at the वेबैक मशीन and [2]Archived 2010-06-28 at the वेबैक मशीन give Vastitas Borealis starting at 54.7°N and Planum Boreum at 78.5°N. The radius of Mars is approximately 3400 km, so
web.archive.org
[1]Archived 2007-03-10 at the वेबैक मशीन and [2]Archived 2010-06-28 at the वेबैक मशीन give Vastitas Borealis starting at 54.7°N and Planum Boreum at 78.5°N. The radius of Mars is approximately 3400 km, so