Dragon Mound

The Dragon Mound is a structure used for time traveling in the Generation 1 continuity family.

Long ago, there lived an ancient race called the Druids. Nobody knew who they were, or what they were doing.

The Dragon Mound is a dome-shaped structure surrounded by stone columns similar in appearance to Stonehenge. The structure was built as a time traveling device by the wizard Beorht, and was so named after a wandering, fire-breathing dragon took up residence inside.

The interior of the mound appears man-made, illuminated by a glowing green orb.

Fiction

Generation 1 cartoon

In an emergency search for energy, Starscream fiddled with the stone tablet that apparently controlled the time-traveling properties of the Dragon Mound and inadvertently sent himself, Rumble, Ramjet and Ravage back to the year 543 AD.

Warpath collapsed the entrance while firing on the Decepticons, then he and Hoist worked at clearing the rubble in order to follow Starscream and the others inside. Oh, and Spike came along too.

At the conclusion of their misadventures in the 6th century, Warpath used Beorht's Dragon's Bane to defeat the dragon and then the Transformers and Spike entered the mound to return to their own time. A Decepticon Raider in King Arthur's Court