Near upper Spring Canyon washbottom, one gully often washes out and may have to be repaired a bit. Your leader may take a spur to Dellenbaugh Tunnel, which is a strange, usually dry watercourse piercing the Navajo Sandstone. The tunnel is about 100 feet long and high enough that one hardly needs to stoop to walk through. The floor of the tunnel is a limestone layer rich in red chert, and it extends another couple of hundred feet to an abrupt drop into Spring Canyon. The Secret Spire is a strange tower of Navajo Sandstone standing alone on a dome-like base. Nearby are two small arches, one of which is just beside the main road but is easily missed. |