Snake Tongue Pass is a location from the 1985 animated series She-Ra: Princess of Power.
She-Ra: Princess of Power
The two magic users managed to overcome the Horde leader and put him to sleep with a spell. Next, Skeletor double crossed Shadow Weaver and locked her up together with Hordak in a Mystic Cage of Bone, which he transported into a cave and sealed the entrance.
However, by combining their magical and technical skills, Shadow Weaver and Hordak managed to escape.