natural barrier

Examples (10)

• The mountains form a natural barrier between the two countries.
• The river has always acted as a natural barrier, protecting the village from invaders.
• The dense forest will provide a natural barrier against the spread of the wildfire.
• For early settlers, the vast desert was a formidable natural barrier to westward expansion.
• The ocean serves as a vast natural barrier, isolating the island's unique ecosystem.
• A deep canyon creates a natural barrier, making the plateau difficult to access.
• Mountain ranges and wide rivers are effective natural barriers that can limit the migration of animal species.
• By the time the army arrived, the swamp had already formed a natural barrier, halting their advance.
• Without the reef as a natural barrier, the coastline would be much more vulnerable to erosion from storms.
• Does this range of hills constitute a sufficient natural barrier to prevent flooding?