The Cavern of the Serpents existed far below the surface, nestled within the Great Well of Ophideraan, functioning as the place where the flying serpent species – the dominant aerial creatures of Ophideraan – reproduced and originated. Situated underneath the living facilities where the Serpent Masters' slaves were housed, this cavern frequently drew visits from enslaved people driven by the hope of taking a serpent and escaping to liberty. However, Supreme Serpent Master Tyrann invariably apprehended these individuals and, save for the instance of Rebel operative Luke Skywalker during 0 ABY, executed them without delay.