The Clerke Rocks are a group of small rocky islands some 35 miles (56 km) southeast of South Georgia that extend 5 miles (8.0 km) from east to west.[1] The Clerke Rocks include The Office Boys (Spanish: Los Mandaderos) at the northeastern end and Nobby (Spanish: Islote Llamativo or Roca Notable) at the southeastern end of the group. The highest island reaches 242 m (794 ft) above sea level. The rocks are similar to those found at Drygalski Fjord on South Georgia. Vegetation is largely absent but there is a sparse lichen flora.[1]
The islands, possibly seen first by Anthony de la Roché in April 1675,[1] were discovered in 1775 by a British expedition under Captain James Cook, who named them for Charles Clerke, an officer on HMS Resolution, who first saw the rocks. There are no natural landing places; the first landing was made in 1927 by Norwegian whalers, who collected rock samples. Since then, three further landings have been recorded, two of them for scientific purposes.[2]