Related Clues:

• Twix maker
• NASA destination
• Land of Opportunity?
• Snickers alternative
• Its highest point is Mount Olympus
• Pathfinder destination
• Deimos circles it
• Opportunity visited it
• ___ rover
• Viking mission
• Popular sci-fi locale
• Blemishes
• Hershey rival
• Fourth planet
• Pathfinder's destination