A Crossing is a Path that crosses from a Coastline, Offshore or Mid-Ocean margin to an opposite margin via a recognisable point and can be divided into 2 variants.
A Crossing is also a variant of a Crossing Path.
Greenland Crossings can be further divided into 4 variants.
A Crossing of Antarctica:
A Crossing of the Arctic Ocean:
A Crossing of Greenland:
Crossing variants: Full Crossing; Crossing; Inland Crossing; Mid-Ocean Crossing
Examples: Crossing of Antarctica, Full Crossing of Greenland
A Double Crossing, typically of Greenland or its ice sheet, must include a minimum of 800km in linear distance and reach opposite coastlines.
Double Crossing variants: Full Double Crossing; Double Crossing; Inland Double Crossing; Mid-Ocean Double Crossing
Example: Double Crossing of Greenland
Greenland's oblong shape requires unique classification criteria with 4 variants.
Greenland crossings are not obliged to use variant descriptors, all can be labelled Crossing of Greenland or Greenland Crossing (so long as general Path criteria are satisfied).
Other oblong-shaped regions, such as Baffin Island, should use the same classification guidelines.
Latitudinal Greenland Crossing
A straight line connecting the start and end points of a Latitudinal Greenland Crossing is 22.5º angle or less in relation to a line of latitude.
Latitudinal Crossing variants: Full Latitudinal Crossing; Latitudinal Crossing; Inland Latitudinal Crossing; Double Latitudinal Crossing
Diagonal Greenland Crossing
A straight line connecting the start and end points of a Diagonal Greenland Crossing is greater than 22.5º angle in relation to true north/south and a line of latitude.
Diagonal Crossing variants: Full Diagonal Crossing; Diagonal Crossing; Inland Diagonal Crossing; Double Diagonal Crossing
Longitudinal Greenland Crossing
A straight line connecting the start and end points of a Longitudinal Greenland Crossing is 22.5º angle or less in relation to true north/south.
Longitudinal Crossing variants: Full Longitudinal Crossing; Longitudinal Crossing; Inland Longitudinal Crossing; Double Longitudinal Crossing
North-South or South-North Greenland Crossing
The start and end points of a North to South or South to North Greenland Crossing are above and below latitudes 80º and 62º north respectively.
NS/SN Crossing variants: Full NS/SN Crossing; NS/SN Crossing; Inland NS/SN Crossing; Double NS/SN Crossing