Bonanza City, laid out in 1877 as the Yankee Fork's first mining camp, became a convergence point for pack trails linking Ketchum, Stanley, Loon Creek, and Challis. At its peak it had over 600 residents, a rectangular grid of streets, community wells, and an underground water system that piped water for drinking and fire protection throughout the town. Despite this foresight, fires in 1889 and 1897 devastated portions of Bonanza, and the loss of business from the fires and increased activity at Custer encouraged many residents to relocate. Little remains today except a few buildings and the Forest Service Guard Station constructed by the Civilian Conservation Corps in 1934, while one mile west the historic Bonanza Cemetery overlooks the Yankee Fork and nearby Boot Hill Cemetery contains the grave of Lizzie King, whose death remains a Yankee Fork mystery.