Before the opening of the Barlow Road, pioneers traveling by land from the east followed the Oregon Trail to Wascopam Mission (now The Dalles) and floated down the Columbia River to Fort Vancouver, then a perilous and expensive journey. It was also possible to drive livestock over Lolo Pass on the north side of Mount Hood, but that trail was too rugged for vehicles and unsuitable for wagons. A trading post (allowed by the Department of War) had been built where river crossings could be made along with the disassembly of wagons to make rafts suitable for floating down the remainder of the Columbia.