The name "Channeled Scablands" was first used in the early 1920's by geologist J Harlen Bretz, who proposed the idea that the erosional features were the result of a gigantic flood. The most spectacular flood features were carved into the black volcanic rock terrain in eastern Washington. This rock, the "floor" of the Scablands, is basalt—a dense crystalline lava that covers more than 100,000 square miles. [The lava field] is completely surrounded by mountains and nearly encircled by three rivers—the Columbia, the Spokane, and the Snake.
From the USGS website, "Geologic Survey of the Channeled Scablands of Eastern Washington"
Founded by fiction writer Sharma Shields, Scablands Books is a fledgling boutique press based in Spokane, Washington. Scablands Books aims to publish strange, smart, innovative writing, with an emphasis on writers from the Inland Northwest, including Eastern Washington, Eastern Oregon, Idaho, and Western Montana. The titles published here reflect the uncanny and unique landscape of the Channeled Scablands region.