The other primary route to the headwaters of the Yukon River, however, was also based out of Skagway: the rival White Pass route. The White Pass route was slightly longer but less rigorous and steep, whereas the Chilkoot was shorter and more difficult. Skagway, because of its deepwater harbor, served as the principal port for both routes (nearby Dyea, the beginning of the Chilkoot Trail, was built on the extensive, shallow Taiya River delta).