Google Earth compiles images from various sources, from satellites in geosynchronous orbit that snap low-resolution photos from tens of thousands of miles above Earth, to satellites closer to Earth that capture higher-resolution shots and even aerial photos taken from airplanes, kites, drones and even balloons. The imagery is available to anyone who downloads the software, and archaeologists have taken advantage of the rich resource.

From a boneyard of military planes, to a polka-dot pattern created by ants, to mysterious structures etched into the Gobi Desert and even a phantom island in the South Pacific, Google Earth brings some wacky places to light. For example, once scientists discovered more than 50 geoglyphs across northern Kazakhstan in Central Asia, including this swastika-shaped design. Though the swastika symbol was created from timber, many of the geoglyphs were made of earthen mounds. The geoglyphs seem to date back 2,000 years. At the time, swastikas were not uncommon across Europe and Asia and were not of course affiliated with any political beliefs.

In 2012, a group of Australian researchers “undiscovered” an island the size of Manhattan in the South Pacific.

A mysterious place called Sandy Island had popped up on maps, northwest of New Caledonia. It even showed up as a black polygon on Google Earth. But when scientists sailed there in November 2012, they found open water instead of solid ground.

In an obituary for the island published in April 2013, the researchers explained why the phantom landmass had been included on some maps for more than a century, pointing to some human errors and a possible pumice raft.

Here’s a look at some of the strangest things ever captured by Google earth: