Koshmar (Кошмар, lit. as Nightmare) is a prison located in Moscow. According to Anatoly Knyazev it is the worst prison in Russia; it is full of violent psychopaths and killers, getting into this prison is easy, breaking out is nearly impossible.
History
TBA
Appearances
Arrow
Season 2
- "Keep Your Enemies Closer"
- "Suicide Squad" (mentioned)