lamath National Forest is a 1,737,774-acre (2,715.27 sq mi, or 7,032.52 km2) national forest primarily located in Siskiyou County in northern California, but with a tiny extension into southern Jackson County in Oregon. The forest contains continuous stands of ponderosa pine, Jeffrey pine, Douglas fir, red fir, white fir and incense cedar. Old growth forest is estimated to cover more than 175,000 acres (708 km2) of the forest land. This forest is subject to logging, mostly in clear-cut patterns that checkerboard the landscape.The Forest headquarters are located in Yreka, California.