On the middle fork of the Koyukuk, at the mouth of Slate Creek, Coldfoot sits within a cirque of rugged mountain peaks, the most northerly postal town in the interior of Alaska, the most northerly gold-mining town in the world, as it claims. It sprang into existence in 1900 and flourished for a season or two with the usual accompaniments of such florification. In 1906 it was already much decayed, and is now dead. Ever since its start the Koyukuk camp has steadily produced gold and given occupation to miners numbering from one hundred and fifty to three hundred, but the scene of operations, and therefore the depot for supplies, has continually changed. In 1900 the chief producing creek was Myrtle, which is a tributary of Slate Creek, and the town at the mouth was in eligible situation, though much over-built from the first. Then the centre of interest shifted to Nolan Creek, fifteen miles farther up the river, which is a tributary of Wiseman Creek, and the town of Wiseman sprang up at the mouth of that creek. The post-office, the commissioner's office, and the saloon, the stores and road-houses, migrated to the new spot, and Coldfoot was abandoned. Now the chief producing creek is the Hammond River, still farther up the Koyukuk, and if its placer deposits prove as rich as they promise it is likely that a town will spring up at the mouth of the Hammond which will supersede Wiseman. There has never been found a continuous pay-streak in the Koyukuk camp. It is what is known as a "pocket" camp. Now and again a "spot" is found which enriches its discoverers, while on the claims above and below that spot the ground may be too poor to work at a profit; for ground must be rich to be worked at all in the Koyukuk. It is the most expensive camp in Alaska, perhaps in the world. This is due to its remoteness and difficulty of access. Far north of the Arctic Circle, the diggings are about seventy-five miles above the head of light-draught steamboat navigation, and more than six hundred miles above the confluence of the Koyukuk with the Yukon. Transshipped at Nulato to the shoal-water steamboats that make three or four trips a season up the Koyukuk, transshipped again at Bettles, the head of any steamboat navigation, freight must be hauled on horse scows the remaining seventy-five miles of the journey; and all that handling and hauling means high rates. The cost of living, the cost of machinery, the general cost of all mining operations is much higher than on the Yukon or on the other tributaries of that river. The very smallness of the camp is a factor in the high prices, for there is not trade enough to induce brisk competition with the reduction of rates that competition brings. [Sidenote: MINERS' GENEROSITY]