The Boeing 777 disappeared somewhere over the southern Indian Ocean with 239 people onboard, 40 minutes after departing Kuala Lumpur International Airport in 2014. The incident has become one of the most widely-speculated aviation mysteries as several multi-national rescue operations have produced no conclusive results, with costs climbing into hundreds of millions of pounds.

But, now, a retired research scientist claims to have uncovered what he believes to be the missing wreckage in the form of a single yellow pixel, described as an “anomaly” in a global terrain model for the ocean. The flight’s cabin crew last communicated with air traffic control roughly 38 minutes after takeoff when the flight was over the South China Sea, leading to initial searches to be in this region.