Black Hollow

Its like a pure black hole that a cat can walk into. Once inside it's like you are engulfed by darkness. You cannot see a thing unless you state that you are hoping to be given a second chance on earth, to try again and be a good cat. They do this so they may travel to StarClan. But if a cat is only bad in their second chance, a bolt of lightning will kill them and send them straight to The Endless Darkness.