The hatch that Dominique, Markas and Jerrmiah were born in and were also raised in. Hatch #27 was built with the intention of simply housing and allowing several groups of people to survive through the radiation. It was left closed for quiet a few years longer than the other hatches were, for fear of the outside world being FAR too dangerous. After about 25 years past the date it was supposed to be open the people finally decided to open it due to food shortage and someone tampering with the gardening systems inside the Hatch. After the Hatch was opened several savages began assaulting it and attempted to get past the guards of the vault. A group managed to push forward and choke off the savages, known as Raiders, at the entrance of the underground cavern. The Raiders still continued assaults, but being able to make a camp at the entrance to the cave helped in holding the ground for the Hatch Dwellers. Hatch #27 also was known to have an Education Sanctum, Garden and other facilities. There are also Dogs that were trained in various tasks as well.