To reach the gold fields, most took the route through the ports of Dyea and Skagway in Southeast Alaska. Here, the Klondikers could follow either the Chilkoot or the White Pass trails to the Yukon River and sail down to the Klondike. Each of them was required to bring a year's supply of food by the Canadian authorities in order to prevent starvation. In all, their equipment weighed close to a ton, which for most had to be carried in stages by themselves. Together with mountainous terrain and cold climate, this meant that those who persisted did not arrive until summer 1898. Once there, they found few opportunities, and many left disappointed.
Mining was challenging as the ore was distributed in an uneven manner and digging was made slow by permafrost. As a result, some miners chose to buy and sell claims, building up huge investments and letting others do the work. To accommodate the prospectors, boom towns sprang up along the routes and at their end Dawson City was founded at the confluence of the Klondike and the Yukon River. From a population of 500 in 1896, the town grew to house around 30,000 people by summer 1898. Built of wood, isolated and unsanitary, Dawson suffered from fires, high prices, and epidemics. Despite this, the wealthiest prospectors spent extravagantly gambling and drinking in the saloons. The Native Hän people, on the other hand, suffered from the rush, being moved into a reserve to make way for the stampeders, and many died.
An adjective clause tells something about the noun or pronoun in the sentence. It provides some of the required information which is essential for the sentence. An adjective clause begins with relative pronouns or relative adverbs. They provide additional information. A subject and a verb is a part of an adjective clause. In the above sentence, 'that is mailed today' is the adjective clause.
