The Bag of Holding is a magical object that can hold everything inside of it but also pulls in everything around it and it is only featured in the Adventure Time comics.
The Snail freed The Lich from the bag, and began to use it to destroy everything on the planet. The bag can pull in very deep parts of the ground. The path it leaves is a deep and narrow canyon, as it even pulled out ancient layers of Earth with dinosaur fossils and mammal skulls.
The bag appears to stop absorbing things when no one is using it. Finn, Jake, Ice King , and the entire Candy Kingdom end up getting sucked into the bag. Finn and Jake meet Desert Princess inside it. The bag transports things and people into random locations in it, but Finn and Jake stayed together because they were in "Jake Suit mode". It was later destroyed in "Issue 3".