Arachnoids
On Venus, one of a number of round networks of fractures in the crust, resembles spider webs.
Archaeoastronomy ...
ARACHNOIDS
Arachnoids are round networks of fractures in Venus' crust. They are called arachnoids because they loook a bit like spider webs (spiders are arachnids).
ARC
An arc is a segment along the circumference of a circle.
Arachnoids are shown here. These features have a rather circular or at least oval shape and are made up of concentric rings along with an almost radiant cracking - sort of like the legs of a spider stretching outwards.
Arachnoids
Arachnoids are one of the more remarkable features found on Venus. They are seen on radar-dark plains in this Magellan image mosaic of the Fortuna region.
farra, which look somewhat like pancakes and range in size from 20-50 km across, and 100-1000 m high; radial, star-like fracture systems called novae; features with both radial and concentric fractures resembling spiders' webs, known as arachnoids; ...
'' These are also unique, never before seen on any other planet or satellite in the solar system. Other new volcanic features seen by Magellan included what some astronomers have dubbed "arachnoids'', ...
 See also: Venus, Arachnoid, Earth, Diameter, Kilometer
  
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