another city - Mandelbulb3D with Parameter

SierpHilbert + _reciprocalY3b
cutout with: HeightMapIFS and RandCubesIFS

nice combo to build "random cities".

Mandelbulb3Dv18{
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zzzz............1/...................2./8.kzzzD............8....................
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................................................................................
.....................................wzzzzD.....................................
........................................U.2.....................................
................................................................................
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................................................................}