Swedish–Russian Arc-of-Meridian Expedition

The main purpose of the mission was to measure a meridian arc, in order to determine the earth flattening at the poles.

The measurements were done by establishing a chain of triangulation points from Keilhaufjellet in Sørkapp Land to Vesle Tavleøya north of Nordaustlandet.

The Russians were responsible for the southern measurements, while the Swedes performed the northern measurements from a base at Crozierpynten on the eastern side of Sorgfjorden.

[2] The expedition also took the first photographs of the aurora.

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