National Geographic News

Measuring North Pole Depth

Photograph by Admiral Robert E. Peary

On April 7, 1909, expedition members dole out 1,500 fathoms (9,000 feet/2,740 meters) of line in an attempt to find bottom near the Pole. After taking the sounding, the 80-pound (36-kilogram) apparatus was left in order to lighten one of the sledges.

Share