Twenty two miles west of Seligman brings you to Grand Canyon Caverns, Arizona, a popular tourist destination, virtually since the beginning of Route 66. Over the years, the caverns name has been changed several times. After Walter’s initial Yampai Caverns, they were called the Coconino Caverns up until 1957, when they were changed to the Dinosaur Caverns, only to finally be called Grand Canyon Caverns in 1962.

Today, the tourist stop also includes a motel, restaurant, and gift shop for the Route 66 traveler stopping to see this ancient cavern. Photo by Dave Alexander.