1) Symbol of Idaho 
[soil] Threebear soil is the official state soil of the U.S. state of Idaho. ==Profile== The Threebear series consists of moderately well drained soils formed in silty sediments with a thick mantle of volcanic ash. These soils are moderately deep to a fragipan. The name `Threebear” is derived from a creek in Latah County, Idaho. These soi...