Devil's Slide in Weber Canyon, northern Utah, is a distinctive geologic formation of two parallel limestone walls rising vertically from the mountainside with a deep chute between them. The rock layers were deposited 170 to 180 million years ago in a shallow sea, then tilted upright about 75 million years ago by mountain-building forces; erosion later removed softer material and left the twin ridges exposed. The landmark was variously named over time, including Gutter Defile and Devil's War Club, and it gave its name to a nearby limestone-mining town that later vanished. Today it remains one of Utah's best-known roadside geologic sights.