When he got home from work, New Yorker Pat wasn't expecting to stumble upon what looked like a miniature crop circle in his backyard.

Pat, 40, returned from work on Tuesday evening where he was greeted by a curious sight: a perfectly circular patch of matted grass in his backyard.

"What's going on here?" he wrote in a post on Reddit 's r/whatisthisthing, which has since racked up over 6,000 upvotes. "The grass is matted down, but it doesn't feel soft like a sinkhole or anything like that. Any idea what would cause this?"

The picture—a ring of flattened grass surrounded by healthy green—ignited a flurry of speculation from Reddit users, with theories ranging from the plausible to the downright extraterrestrial.

Internet Shares Theories

"Someone might have landed a drone there," sug

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