The Old Vine Jungle is an underground location on Eternia that is featured in He-Man and the Masters of the Universe.
The Old Vine Jungle was possibly one of the most dangerous places on Eternia. It was a dense, overgrown, musty and moss-covered region located under the planet's surface beneath the Crystal Forest. This eerie environment was full of deadly vegetation like Tickle Traps and was crawling with man-eating plants and monsters such as Ogres and Plant Apes.