Platforme pentru aeronave cu decolare și aterizare pe verticală? Incepem o posibila demonstratie cu ciclopicele platforme megalitice din Yangshan Quarry, Nanjing , China.

 

The unfinished stele body (right) and the stele head (left).

 

 

The three unfinished stele components remain in Yangshan Quarry to this day, only partially separated from the living rock of the mountain. The present dimensions and the usual weight estimates of the steles are as follows:
 

 

 The Stele Base
(  32°04′03″N 119°00′00″E / 32.0675°N 119°E  / 32.0675; 119),
30.35 m long, 13 m thick, 16 m tall, 16,250 metric tons.

 

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The Stele Body
 (  32°04′07″N 119°00′02″E / 32.06861°N 119.00056°E / 32.06861; 119.00056 ),
 49.4 m long (this would be the height, if the stele were to be properly installed), 10.7 m wide, 4.4 m thick, 8,799 tons.

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   The Stele Head

(  32°04′06″N 119°00′02″E / 32.06833°N 119.00056°E  / 32.06833; 119.00056),

10.7 m tall, 20.3 m wide, 8.4 m thick,^[3] 6,118 tons

 

 

 

 

 

 

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