Related Clues:

• Steep cliff
• Crest
• Mountain chain
• Rocky prominence
• Roof feature
• Fingerprint part
• Sharp mountain ridge
• Sharp mountain spur
• Rocky Rockies ridge
• It's on the back of a Rhodesian dog
• Glacial aftermath, perhaps
• Alpine ridge
• Sharp, narrow ridge
• First secretary of homeland security
• Guitar fret, e.g.