Feature Name (see definition): Lyddan Island

Feature Class (see definition): Island

Country Code (see definition): AQ (Antarctica)

Feature ID (see definition): 9159

Primary Latitude in degrees, minutes, and seconds (see definition): 74° 25' 00" S

Primary Longitude in degrees, minutes, and seconds (see definition): 020° 45' 00" W

Primary Latitude in decimal degrees (see definition): -74.4166667

Primary Longitude in decimal degrees (see definition): -20.75

Elevation (see definition): No data

Decision Year (see definition): 01/01/1970

Description (see definition): An ice-covered island at the SW extremity of Riiser-Larsen Ice Shelf, about 20 mi off Princess Martha Coast. The island is about 45 mi long and has three narrow arms in the form of a trefoil. It was discovered and plotted by W.R. MacDonald on Nov. 5, 1967, in the course of a U.S. Navy (USN) Squadron VXE-6 reconnaissance flight over the coast in LC-130 aircraft. Named by Advisory Committee on Antarctic Names (US-ACAN) for Robert H. Lyddan, Chief Topographic Engineer of the U.S. Geological Survey (USGS), who has been active in the planning and supervision of Antarctic mapping operations since the 1950s.

Date Created (see definition): No data

Date Edited (see definition): No data