Last week's image, included above, shows one of the best-known petroglyph boulders from a site near Roosevelt, Klickitat County, that was flooded following the construction of John Day Dam, according to Rick McLure. “This particular petroglyph boulder was removed prior to inundation of the site, initially relocated to a roadside park on SR 14, but has been more recently relocated to an outdoor exhibit at Horsethief Lake in Columbia Hills State Park,” he wrote. “The relocation to the State Park was accomplished through the efforts of the Yakama Nation Cultural Resources Program, U.S. Army Corps of Engineers, with the support of other Tribes.”

An online commenter also recognized Columbia Hills State Park.