Cairo (AFP) - A large red granite carved door was unearthed near the Karnak Temple in Luxor, Egypt's culture minister said on Monday. The door was believed by ancient Egyptians to be the threshold to the afterlife. The SyFy channel has already acquired lifetime rights to the door and plans to release another spinoff from the popular "Stargate" series, entitled, "Stargate Afterlife." Richard Dean Anderson has been optioned for three guest appearances.