This guide is designed to make your Washington state parks vacation as easy and as enjoyable as possible.

Often overlooked by those cruising on the highway to Spokane or the Tri-Cities area, more than 2,000 square miles of terrain in eastern Washington are home to a striking collection of sharp-edged coulees slicing through a crust of basalt. In this stunning landscape, deep lakes fill the depths of dramatic gorges flanked by steep walls of towering rock columns, labyrinthine channels, and wide tracts of scabby rock that give the region its name -- geologically,...