Walnut Canyon Poster Alaska Now largely designated as U

Now largely designated as U

18% grades plagued motorists who braved this steep stretch of the Lincoln Highway

The bridge above Hoover Dam honors Mike O’Callaghan

where visitors can enjoy the scenic splendor of this geologic wonder

244 feet across

Walnut Canyon Poster Alaska Now largely designated as UDescription 14" x 22" poster Interpretive Copy Sheltered alcoves on limestone cliffs attracted the Sinagua culture to this canyon eight hundred years ago. Despite a largely dry environment, the peoples agricultural and trade skills allowed them to prosper. Walnut Canyon National Monument, Arizona, preserves and interprets the dwellings and finely wrought artifacts they left behind.