Context : Refuge Astronomer Cruls (Portuguese: Refúgio Astrônomo Cruls) is a Brazilian Antarctic summer facility named after astronomer Luis Cruls who set up an expedition in 1882 to Punta Arenas in order to observe the passage of Venus across the disk of the Sun. The structure, established on 25 January 1985, is situated on Nelson Island (South Shetland Islands), southwest of King George Island, South Shetland Islands, Antarctica. 
Question : On which continent is Refuge Astronomer Cruls located?
Antarctica