The park includes as one of its units the White Pass Trail. White Pass is a mountain pass that leads from Skagway to the headwaters of the Yukon River in British Columbia. The trail was one of the two main routes used by prospectors to get from Skagway over the Boundary Range on their way to the gold fields in the Yukon. The White Pass and Yukon Route railway, completed in 1900, used White Pass to bring prospectors from Skagway to Whitehorse, Yukon.