About this time the fishery trade was so important that one colony numbered over 20,000 inhabitants during the season; but it was not a settled population, and a few years after the understanding had been arrived at, the colony was deserted owing to the ruthless slaughter of all marine animals having practically exterminated them in the vicinity. From that time the islands have been neglected, save for the occasional visits of a few trappers, until Sir Martin Conway and his companions penetrated to the interior, and came back with so many delightful experiences that an enterprising company was formed to make this snow-laden district a place for summer resort. [Illustration: THE FRONT EDGE OF KING'S GLACIER, WESTERN SPITZBERGEN. The thickness of the ice showing above the sea-level is about 100 feet. _Photo by E. J. Garwood._] From a geological point of view the main island is full of interest, for the interior, which is characterised by mountain chains and rugged peaks, is covered with ice, and is sending down glaciers to the coast, where they come under the influence of the warmth generated by the Gulf Stream and rapidly melt. The result is that the constant rush of torrents from the melting glaciers and snowfields is carving out valleys and river-ways, and stripping away mountain sides to make coastal plains so rapidly as to form an admirable object-lesson of physical geography in the making. During the season Sir Martin Conway and his companions spent on the island they set a record for energy and achievement. They spent thirty-six days in the interior, sleeping either in small tents or in the open, the one being little different to the other, for the tents never kept the rain out and rarely the snow. Then they voyaged in a twelve-ton steamer up and down the coast for a distance of something like a thousand miles, though the steamer cabin was so small a place that when all the five members of the party were down below together, only one of them could stand up at a time. By the date their trip had ended they had crossed the island four times, had made thirteen mountain ascents, had made a rough survey of six hundred square miles of country, had steamed a thousand miles among heavy ice along coasts, through straits, and up bays, for the most part never before visited, and had located innumerable streams, hills, and glaciers.