Vilinnon is a solar system. It is located in the Gallente Federation and is infamous for being the site of the Serpent's Coil (formerly Lookout Post 7-0Z), which after the first Gallente-Caldari War became a stronghold of the Serpentis Corporation.
Residents of Vilinnon and the Gallente Federation as a whole try not to draw attention to its presence. The Federation has adopted a policy of ignoring the issue, as the Vilinnon system is under-developed and considered too insignificant to warrant the military effort required to drive the pirates out. However, the peculiar rock formations at this location are of great interest to astrophysicists, some of whom speculate the formations are the result of an ancient experiment. The presence of the Serpentis prevents further investigation.