Baltica data makes it difficult to locate the margin in the Arctic. Ordovician faunas indicate that most of Svalbard, including Bjørnøya, was part of Laurentia, but Franz Josef Land and Kvitøya (an eastern island of the Svalbard archipelago) most likely became part of Baltica in the Timanide Orogeny. The Taymyr Peninsula, in contrast, never was part of Baltica: southern Taymyr was part of Siberia whilst northern Taymyr and the Severnaya Zemlya archipelago were part of the independent Kara Terrane in the early Palaeozoic. The eastern margin, the Uralide orogen, extends from the Arctic Novaya Zemlya archipelago to the Aral Sea. The
Belushya Guba area of restricted access (formally, as part of border security zone), and a special permit is needed to visit the archipelago. About northeast of Belushya Guba is the settlement of Rogachevo, the second largest in the archipelago, along with the Rogachevo airbase. Upon visiting Novaya Zemlya in 1894, Arkhangelsk Governor decided to create a new encampment. In 1896, an expedition conducted a survey of the west coast of Novaya Zemlya. The following year Belushya Guba was founded. During World War II, Belushya Guba was a focus of both German and Soviet attention. German U-boats used Belushya Bay as a resting