Pillars at Karnak in Egypt. Technically called the Karnak Temple Complex which is made up of ruined temples, chapels, pylons, and other buildings about 500 km south of Cairo.
Wikipedia says: “One of most famous aspects of Karnak, is the Hypostyle Hall in the Precinct of Amun-Re, a hall area of 50,000 sq ft (5,000 m2) with 134 massive columns arranged in 16 rows. 122 of these columns are 10 meters tall, and the other 12 are 21 meters tall with a diameter of over three meters.
The architraves on top of these columns are estimated to weigh 70 tons. These architraves may have been lifted to these heights using levers. This would be an extremely time-consuming process and also would require great balance to get to such great heights. A common alternative theory about how they were moved is that there were large ramps made of sand mud brick or stone and the stones were towed up the ramps. If they used stone for the ramps they would have been able to build the ramps with much less material. The top of the ramps presumably would have either wooden tracks or cobblestones for towing the megaliths.” link to Wiki page
You can visit “digital Karnak” at this site run by UCLA.
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