Related Clues:

• Arizona-based airline
• Steep-walled formation
• Miniature plateau
• Arizona's third-largest city
• It's flat on top
• Badlands landform
• ''Wild Horse __'' (Zane Grey book)
• Butte's larger cousin
• Desert formation
• Broad terrace with a steep side
• Mesa relative
• Onetime Montana copper town
• Remaining
• The Montana Standard is its daily paper
• Geological flat-top