45 Things With Mysterious Purposes People Couldn’t Identify

When they came across these rusty metal structures, this person was out for a stroll in the park (or maybe they were jogging?). We can see why this structure would attract the attention of an innocent bystander. It looks like an uncovered secret entrance to some kind of an ancient bunker.

As it turns out, there’s no spooky backstory to this rusty object. It’s only a vent for underground gasses. As one Reddit user explained, this park used to be a landfill, which collects gas, and these vents are meant to, well, ventilate the gas and allow it to move upward freely.