By the 1800s, Rainbow Bridge was probably seen by wandering trappers, prospectors, and cowboys. Not until 1909, though, was its existence publicized to the outside world. Two separate exploration parties – one headed by University of Utah Dean Byron Cummings, and another by government surveyor, W.B. Douglass – began searching for the legendary span. Eventually, they combined efforts. Paiute guides Nasja Begay and Jim Mike led the way, along with trader and explorer John Wetherill. Late in the afternoon of August 15, coming down what is now Bridge Canyon, the party saw Rainbow Bridge for the first time.