A perceptive Google Earth user discovered an abnormally shaped object near the coast of Antarctica, setting off a flood of comments from YouTube users.

On August 7, a YouTuber who goes by MrMBB333 shared a compilation of images that his fans had found on Google Earth.

One fan, identified only as D. Whitaker, submitted coordinates to a location not too far from the world’s southernmost continent. Satellite images show what appears to be an “ice ship,” an iceberg that is shaped like a huge boat.