This picture was taken in 2007, one year after the 2006 Tripod Complex fires in the northern Washington. The wildfires initiated as two lightning strikes and spread over 175,000 acres of mixed conifer forest in the Okanogan National Forest. The Tripod Complex was one of the largest wildfires in Washington in the past half-century, costing more than $82 million in resources to fight. The fire threatened nearby towns of Winthrop, Conconully, and Loomis, but did not encroach. Credit: Joanne Ho, College of Forest Resources, University of Washington