refuge from the elements in purpose-built stone huts, tent bivouacs or natural caves. Livingston Island became the most populous place in Antarctica for a time, its dwellers exceeding 200 in number during the 1820–23 South Shetlands sealing rush. The principal sealer ‘settlements’ on the island were situated on Byers Peninsula, as well as at Cape Shirreff and Elephant Point. Argentine archaeological research has identified 26 human-built shelter structures on Byers Peninsula alone. There were some women among the early inhabitants of the island, as evidenced by a 1985 discovery of the grave of a 21-year-old woman of mixed European and Native American descent at Yamana Beach on Cape Shirreff, dated to the early 19th century. Remains of huts and sealer artefacts are still found on Livingston, which possesses the second greatest concentration of historical sites in Antarctica (after South Georgia). The memory of that epoch survives, other than in archaeological finds, also in a dozen preserved ship logs and as many memoirs, such as the candid story published in 1844 by one Thomas Smith who sailed to Livingston in the sealer Hetty under Captain Ralph Bond during the 1820/21 season. Sealing was replaced by another rush of unsustainable commercial exploitation during the 20th century – Antarctic whaling. This time Livingston Island was not directly involved, although the southernmost Hektor Whaling Station was operated by Norway on nearby Deception Island from 1912 to 1931. Whaling likewise depleted its resource and gave way at the turn of the 1970s to modern Antarctic fishing industry pioneered by the fishing fleets of the Soviet Union, Poland, East Germany and Bulgaria. A significant milestone in Livingston Island's history was the Antarctic Treaty signed in 1959 and entered into force in 1961, which effectively placed the region south of 60° south latitude under the joint governance of the consultative (voting) parties to the treaty, providing in particular for the freedom of scientific exploration. The treaty left the personnel of the Antarctic bases under their respective home countries’ jurisdiction, and essentially froze the existing sovereignty claims. (Livingston, in particular, was claimed by Britain in 1820 with letters patent of annexation promulgated in 1908, by Chile in 1940 and by Argentina in 1942 — claims not recognized, among others, by the US and Russia, which have formally reserved their rights to claim Antarctic territories.) Since then, the evolving Antarctic Treaty System has been providing an increasingly comprehensive legal