2026 marks 100 years of National Park Service Interpretation at Grand Canyon National Park. In honor of this anniversary, here's Louis Schellbach's introductory geology talk. Throughout his talk, he references geologic details once viewed through a series of mounted binoculars on the parapet at Yavapai Observation Station (now Yavapai Geology Museum). Schellbach served as the park's Chief Naturalist from 1941–1957.

The very first episode of the brand new Echoes from the Canyon Radio Hour shares the tall tales, disappearances, folklore, and unbelievable mysteries found at the Grand Canyon. Developed by park rangers using first-hand accounts and primary documents, human history comes alive in this new series. Mysteries abound in the Grand Canyon!