Mountains

“No army crosses these peaks. No plough breaks this stone. The mountains answer to no one.”

Mountains are impassable terrain that no land unit can enter and no improvement can be built upon. These towering peaks of bare rock and perpetual snow serve as natural walls on the map, channelling movement and shaping the strategic landscape. While they produce nothing and cannot be used, their mere presence can define the course of wars and the borders of empires.

Yields

Movement

Valid Improvements

None. Mountains cannot be improved.

Strategy

Mountains cannot be entered, worked, or improved – but they are far from useless. A mountain range on your border is one of the most powerful defensive features in the game, functioning as an impenetrable wall that forces enemy armies to funnel through gaps and passes. A city positioned at the end of a mountain range, guarding the only way through, can hold off forces many times its size.

When scouting for city locations, pay close attention to mountain placement. A city with mountains on two or three sides has natural protection that would otherwise require multiple military units to replicate. Conversely, being trapped behind mountains with limited exits can leave you bottlenecked and unable to expand. Mountains also block line of sight, meaning enemy units on the far side of a mountain range are invisible to you without scouts or units positioned to see around the barrier.

The key strategic consideration with mountains is that they affect both you and your opponent equally. A mountain range that protects you from invasion also prevents you from easily attacking in that direction. Plan your expansion and military campaigns with mountain geography firmly in mind.

Historical Background

Mountain ranges have shaped the political geography of the world more than any other terrain feature. The Alps separated Roman Italy from the Celtic and Germanic north, making Hannibal’s famous crossing in 218 BCE one of history’s most audacious military feats. The Himalayas created a near-absolute barrier between the Indian subcontinent and China, ensuring these two great civilisations developed largely independently for millennia. The Pyrenees divided Iberia from France, the Andes split South America’s Pacific coast from its Atlantic interior, and the Hindu Kush shielded the Indian subcontinent’s northwest frontier.

Throughout history, mountain passes have been among the most strategically vital locations on earth – Thermopylae, the Khyber Pass, the Brenner Pass – because they represented the only way through otherwise impassable barriers. Controlling a mountain pass meant controlling the movement of armies, merchants, and entire civilisations.