It is separated at its tip from Nelson Island by Fildes Strait, only 370 m wide at its narrowest. It is bounded on its south-east coast by Maxwell Bay, which is also known as Fildes Bay, and on its north-west by the open waters of the Southern Ocean. Geologically, the peninsula is a tableland made up of old coastal landforms, with numerous rocky outcrops and an average height of 30 m above sea level. Research stations on the peninsula include Chile’s Base Presidente Eduardo Frei Montalva and Profesor Julio Escudero Base, China’s Great Wall Station, Russia’s Bellingshausen Station and Uruguay’s Artigas Base.