Impossible Engineering in our Distant Past, but for them nothing was impossible.

Giant granite parallelepipeds, weighing several tons, moved inside tunnels so narrow that they do not allow wheels under them, do not allow winches to be used to lift them, do not allow them to be turned in any way. Underneath the parallelepipeds there is no sign that sleds, wheels, grease, or anything similar were used. Yet a dozen of these objects were lowered underground, moved in those narrow tunnels, and lowered into side crypts several metres below ground level. Even the idea that they first built the parallelepipeds and then constructed the building fell apart, as the whole structure was dug underground, like a giant anthill.

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