Ta Kon Citadel in Vinh Son, Vietnam
Hidden deep within the remote mountains of Vinh Son, Ta Kon Citadel looks at first glance like the forgotten ruins of a colossal ancient fortress swallowed by the primeval jungle. The geological centerpiece is a massive stone wall stretching 500 to 600 meters along the mountainside and towering up to 40 meters high. Composed of rectangular, hexagonal, and polygonal stone columns packed so tightly…
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