In 1900 Peary explored the north coast of Greenland from Cape Washington in the west to a place he named Wyckoff Island in the east, on the way reaching Cape Morris Jesup, the northernmost point of mainland Greenland.

[4] This headland was marked on Robert Peary's map of the eastern coast of North Greenland as guesswork, based on sighting of two headlands from Wyckoff Land, for the visibility was marred by fog.

[5] Cape Clarence Wyckoff was finally charted with accuracy by J.P. Koch during the 1906-07 Danmark Expedition.

[6] Cape Clarence Wyckoff is located in northern Herluf Trolle Land, eastern shore of Peary Land, on the NE side of the mouth of Hellefisk Fjord,[7] and 13 kilometres (42,651 ft) to the NW of Cape Henry Parish.

Mount Wyckoff, reaching a height of 850 metres (2,789 ft), rises close to the shore of the point.