Once upon a time in a Soviet Union far, far away, Russia set out to build the world's largest particle accelerator under a small town called Protvino. Already plagued by setbacks, the work on the accelerator ceased after the fall of the Soviet Union and it's been abandoned since.

Now, as some explorers found, it looks more like the setting of a sci-fi thriller — just imagine what ancient evil could be lurking down there, or all those zombies just around the corner.

The folks over at English Russia have a full tour both above and below ground of the facility — check it out.

Via English Russia