Simplify the following text for a Grade 13 native English-speaking person.
Original: The British Antarctic Territory includes the Antarctic Peninsula , the South Shetland Islands , South Orkney Islands and numerous other offshore islands , the Ronne Ice Shelf ( Weddell Sea ) , parts of Coats Land , and a triangle of central continental Antarctica converging on the South Pole .
Simplified: In addition to continental Antarctica , within which the BAT claim includes the Palmer Land peninsula , and the Ronne Ice Shelf , Weddell Sea , the territory also includes the South Shetland Islands and South Orkney Islands .