Robert W. Limbert's article, "Idaho's Natural Bridge Revealed to the World," described the natural wonder which he named "Bridge of the Moon." The caption in the article reads, "this wonderful rock formation spanning an abrupt canyon in central Idaho, just brought to public notice for the first time through the explorations of the Valley of the Moon by R.W. Limbert of Boise, was found at a point where the depth of the canyon, viewed through the arch, is 800 feet. The span of the arch is estimated to be 125 feet with about a 100 foot arch. It is 12 miles from the road. The natural color of the rock is light brown, but changes into myriad beauties under the play of sunlight and shadow."

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