Robe Canyon Historic Park–Lime Kiln Trail Professional Review and Guide
"The Lime Kiln Trail provides hiker access to a portion of the historic Everett–Monte Christo Railroad. Built in 1892–93, it was abandoned in 1933. The rock-and-mortar limekiln was built in 1900 and produced anhydrous lime, used as a whitening agent at the Lowell paper mill and as a flux agent at the smelter in Everett.
Like many towns west of the Cascades, Granite Falls was once much larger than it is today, servicing smaller towns like Robe, along the banks of the South Fork Stillaguamish River. In the boom days of mining, logging, and the railroads, Granite Falls was an economic engine. Transportation, construction, and service industry jobs are the main employers today."