 SCP-413 is a four-story parking garage. Inside, SCP-413 has a variable environment that dynamically alters itself. In effect, SCP-413 is able to change its internal structure. Another effect SCP-413 appears to have is to interfere with an individual's sense of direction. Analysis of recordings taken of the interior reveal that SCP-413 generates a low-frequency sound that shuts down or interferes with several key regions of the human brain, controlling navigation, balance, and short-term memory.