A Grand Canyon National Park Press Release 1934

The cave entrance is located at Roaring Springs, in the face of a cliff towering above the site of the Utah Parks Company power and water plant serving Grand Canyon Lodge on the North Rim. The party made its way back into the cave with the aid of flash lights and gasoline lanterns. The course of the cave follows almost true north along what appears to be an ancient earthquake fault in the solid limestone structure forming the ceiling. Water percolating through the fault or crack has eroded away the softer material below until, over a period probably of many centuries duration, creation of the natural drift far back into the side of the Canyon has occurred.

At one point the explorers found one side cavern of some considerable length. At other points, large stalactites and stalagmites, clusters of calcite crystals and shallow pools of water were found. No very large rooms were discovered though the cave is easily negotiable throughout the entire length examined. With proper equipment and guidance, park visitors to the Roaring Springs region could easily be afforded an opportunity to experience the thrill of subterranean exploration in this cave, the mouth of which is in plain view from the Kaibab Trans-Canyon Trail.  

(These days, caves within Grand Canyon National Park are closed to visition without a permit.)