Solidyfied Calcyfied Concrete & Imprints Of The Structural Supports Which Go Into Constructing Such MEGA-STRUCTURES
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https://www.youtube.com/watch?v=0P_xzTPEdZA
cOz ........ forgot to pull fan out the fan whilst recording so its probably you can probably hear it, anyway its not too important here
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https://www.youtube.com/watch?v=_8RoPRvbl5E