Fortress protection
Else clues• A drawbridge may span one
• A drawbridge might go over it
• A drawbridge spans it
• Advanced sandcastle feature
• Alternative to a fence
• Attack deterrent
• Barrier at a zoo
• Battering-ram countermeasure
• Bygone protection
• Castle adjunct
• Castle barrier
• Castle circler
• Castle crossing
• Castle defense
• Castle ditch
• Castle enclosure
• Castle feature
• Castle fortification
• Castle guard
• Castle hassle
• Castle obstacle
• Castle protection
• Castle ring
• Castle security system
• Castle surrounder
• Castle surrounding
• Castle trench
• Castle waterway
• Castle wraparound
• Castle-circling ditch
• Castle-storming hassle
• Castle's Keep Out device
• Castle's catchall
• Castle's perimeter defense
• Castle's protective device
• Castle's protective feature
• Castle's protector
• Castle's surroundings
• Circular defense
• Croc's home, maybe
• Defense ditch
• Defense mechanism
• Defense of sorts
• Defensive depression
• Defensive excavation
• Defensive ring
• Defensive trench
• Ditch around a castle
• Ditch neath a drawbridge
• Ditch under a drawbridge
• Ditch under a lowered drawbridge
• Drawbridge necessitator
• Drawbridge site
• Drawbridge's locale
• Drive-through safari feature
• Dry Windsor Castle feature
• Feature in an open-air zoo
• Feature of some zoos
• Feudal defense
• Fortification ditch
• Fortress barrier
• Fortress feature
• Fortress fosse
• Fortress surrounder
• Fosse
• It may have the castle surrounded
• It may hold the fort
• It may replace a fence at the zoo
• It's under a drawbridge
• Keep guard
• King's protection
• King's traditional protection
• Liquid defense
• Means of defense, once
• Medieval attack deterrent
• Medieval barrier
• Medieval defense
• Medieval defense feature
• Medieval invader's obstacle
• Medieval protection
• Medieval protection against invasion
• Medieval security device
• Medieval security system
• Middle Ages barrier
• Middle Ages defense
• Modern zoo barrier
• Modern zoo feature
• Modern zoo sight
• Old means of protection
• Old protection
• Old security device
• Old-time security system
• Onetime means of defense
• Palace guard?
• Palace protection
• Part of a castle's defense
• Part of a defense
• Protective channel
• Protective ditch
• Protective ditch at Mo.
• Protective feature
• Protective ring
• Protective trench
• Protective zoo feature
• Rampart protector
• Rampart surrounder
• Rampart trench
• Regal protection
• Ring around a castle
• Ring around a fort
• Ring around the castle
• Ring around the rampart
• Ring of water
• Sandcastle feature
• Siege defense
• Stage protection
• Torquilstone defense
• Tower of London feature
• Trench
• Trench around a castle
• Trench below a drawbridge
• Wall alternative, perhaps
• Water around a castle
• Water barrier
• Water hazard
• Water ring
• Water under the bridge
• Water under the bridge, perhaps
• Water under the drawbridge
• Water-filled trench
• Watery ditch
• Watery trench
• Wet circle
• What a drawbridge crosses
• Zoo barrier
• Zoo barrier, sometimes
• Zoo construction
• Zoo feature
• Zoo landscaping feature
• Zoo protection
• Zoo sight
• Zoo trench
• Zoo's fence alternative
• Zoo's swimming hole
• Ditch dug as a fortification and usually filled with water