The British expedition under Sir James Ross was the last to arrive on the scene (in 1841); but it had the advantage of the others, in that it had been specially equipped for Antarctic exploration; Ross’s ships could brave dangers from which Wilkes and d’Urville had been compelled to turn aside. He forced his way through the pack, and found a range of high mountains trending southwards, which he called Victoria Land. Following the land he came to the twin volcanoes, named Erebus and Terror after his two ships, and was stopped at length by the great ice barrier, running eastwards. During this remarkable journey Ross reached latitude 78° 4´ S., the highest yet attained. He made two further journeys, neither so successful as the first, though in 1842 he sighted the land which was rediscovered, and named King Edward Land, in the following century. After this no attempt worthy of mention was made on the south polar region for thirty years. The _Challenger_ expedition in 1874 was not concerned with the attempt to penetrate very far south (Chapter XIV.). The voyage in Antarctic waters, however, was important from the information obtained as to the depth of the southern ocean and other results which helped to prove the existence of a considerable mass of land in the Antarctic region. This information was supplemented by the observations of two of the international circumpolar stations (to which reference has been made), which were established in Tierra del Fuego and South Georgia in 1882; but it was not until many years later that scientific interest was widely aroused in the problem of the Antarctic continent, and from 1874 to 1898 the only people to cross the Antarctic circle were sealers and whalers; but in 1895 C. E. Borchgrevink landed from one of these vessels for the first time on southern continental land near Cape Adare.