Occasional or more permanent field camps support research in remote areas of the island. Camp Byers (Spain) operates regularly on the banks of Petreles Stream, South Beaches near Nikopol Point on Byers Peninsula; that site is also designated for use as an International Field Camp. The seasonal Camp Livingston (Argentina) is also situated on Byers Peninsula, while Sally Rocks Camp (Bulgaria) supported geological research on southern Hurd Peninsula. Camp Academia site situated at elevation in upper Huron Glacier, Wörner Gap area served as a base camp of the Tangra 2004/05 topographic survey. It is accessible by routes from St. Kliment Ohridski and Juan Carlos I base respectively, and offers convenient overland access to Tangra Mountains to the south; Bowles Ridge, Vidin Heights, Kaliakra Glacier and Saedinenie Snowfield areas to the north; Huron Glacier to the east; and Perunika Glacier and Huntress Glacier to the west. The site is named for the Bulgarian Academy of Sciences in appreciation of its contribution to Antarctic exploration, and has been designated as the summer post office Tangra 1091 of the Bulgarian Posts since 2004. Field work done out of Camp Academia during the 2004/05 season was noted in 2012 by Discovery Channel, the Natural History Museum, the Royal Collection and the British Antarctic Survey as a timeline event in Antarctic exploration.