Barrenikon

Barrenikon is a planet far away from Earth. Within it exists a vortex through which an individual can travel through space and time. This vortex is accessible through several caves on Barrenikon's surface, and will lead the traveler to different times/locations depending where it is accessed from. Other geographic landmarks include a vast desert and a swamp filled with quicksand. Barrenikon might have once been inhabited by sentient beings, but that time is now long past, and no trace of civilization remains on the planet's surface, save the occasional crashed ship.

Fiction

St. Michael The Transformers Sticker Book

You arrived on Barrenikon by entering a cave on Earth, which happened to be connected to Barrenikon's vortex. When you emerged from the corresponding cave on Barrenikon, you met a group of Autobots and went on an adventure with them. In some scenarios, where you entered one of Barrenikon's caves in the hopes of finding your way back home, there where four different possibilities that ensued. Either you returned to Earth in the present day, as you had hoped; or you returned to Earth during the time Dinosaurs ruled the planet; or you found yourself falling into a black hole; or you simply found yourself on another planet altogether. The Transformers Sticker Book