UNCONQUERABLE: The Ancient Fortress Even Alexander Couldn't Take | Military Engineering

Alexander the Great conquered the known world, but this ancient mountain fortress stopped him cold.
Hidden in Afghanistan's peaks, Kokdala fortress combined revolutionary engineering with deadly defensive tactics that changed military history forever.
Discover how local defenders used sophisticated water systems, vertical warfare, and psychological warfare to defeat the world's most powerful army.
From secret passages carved in living rock to military innovations still studied today, this is the true story of how mountain warriors outsmarted history's greatest commander.
Learn how ancient builders transformed a mountain into an impregnable citadel, created advanced water filtration systems, and developed vertical combat techniques that left Alexander's elite troops helpless.
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