Climbing Black Mesa, Oklahoma

Oklahoma, in common with more than half the fifty states of the USA, takes its name from a version of a Native American word (the word Oklahoma comes from a Choctaw phrase meaning “red people”). What makes Oklahoma unusual, though, is that it is one of only two states to use Native American symbols as the predominant feature on its flag (the other state is New Mexico). A rawhide shield fringed with eagle feathers and crossed with peace symbols – a peace-pipe and an olive branch – sits distinctively in the centre of Oklahoma’s flag.