Related Clues:

• City near Tempe
• Silhouette in a Southwest skyline
• Spring training site for the Cubs
• It's less extensive than a plateau
• Elevated flat land
• Desert feature
• Los Alamos is on one
• Grand Junction, Colorado, is its county seat
• Acoma Pueblo site
• City east of Phoenix
• City east of Tempe
• Western flattop?
• Arizona-based airline
• Steep-walled formation
• Miniature plateau