Artefakte in den Anden
„Most Inca buildings were made out of fieldstones or semi-worked stones set in mortar, while others had adobe walls, usually with stone foundations. But some of the buildings attributed to the Incas use precisely cut and shaped stones closely fitted without mortar – yet not even a knife blade can be inserted between them. Sometimes more or less rectangular (ashlar) blocks were used, but instead of being straight, each side is usually wavy, yet fits snugly with the neighbouring block. The most advanced stonework makes use of polygonal blocks, with as many as 12 angles or more, which interlock perfectly with all neighbouring blocks; some of the polygonal blocks are truly cyclopean, sometimes weighing at least 100 tonnes. Such stonework staggers the imagination. As regards lateral joints between blocks, the close fit observed from the front of the wall is sometimes only a few centimetres deep and the interior of the joint is filled with rubble. But in many instances, the snug lateral fit extends through the entire thickness of the wall, just as the bedding (horizontal) joints do. Such walls are essentially earthquake-proof. The fact that ‘Inca’ walls tend to incline inwards by 3° to 5° also contributes to their stability.“


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