Related Clues:

• Not so likely
• External
• Lead-in for Mongolia or Hebrides
• ___ Mongolia
• North Carolina's ___ Banks
• Word with limits or ear
• ''The ___ Limits''
• On the perimeter
• Word with limits or space
• Space modifier
• Not inner
• Word before Mongolia
• Surrounding
• ___ Banks
• "The __ Limits": sci-fi fare