Stonehenge Base

Giegue's race presumably had been abducting species from Earth and who knows where for many years. The Stonehenge base, which is below Stonehenge, was probably there for quit some time. The Cave Boys that inhabit the area look like prehistoric humans, so they might have been living in that area since then as well. The Stonehenge base was much too high tech to have been built by humans. It couldn't have been Andonuts who was studying it himself, or Apple Boy who is too young and lacking in supplies to have done so. Perhaps the Stonehenge base was built "just in case" by Giegue's race, for use on Earth. This race of aliens has been on Earth before, abducting people such as George and Maria, and they are the only ones who have such technology. The base also had test tubes to capture many species, as it had Mr.Saturns and humans. Giegue's race built this to capture subjects and experiment on them, in secrecy, while they were still on the planet. This allowed for the subjects to be returned more quickly than if they were on the space ship, and allowed for quicker retrieval of new life forms. The base was built with defensive capabilities and maze like structure to ward off intruders. Thus, in conclusion, the Stonehenge base is a product of the Alien race's engineering.