Built to Terrify Sailors: Inca Cliff Fortress at El Huarco Was a Warning Seen Only from the Sea
Archaeologists working at El Huarco, on the desert cliffs of Cerro Azul in Peru, have found that a 15th-century Inca structure was designed to be seen from the ocean, a monumental warning to enemies approaching by sea, while divers offshore have recovered submerged walls and artefacts.
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