The US and EU have regulations that don't allow you to fly your drone above ~150 meters. Someone in the Netherlands decided to ignore the law and give it a try flight at 3.400 meters.
The anonymous owner drone first posted the footage he shot on YouTube, saying he attempted to break the world record with a DJI Phantom 2. His video was soon taken down modes, and now it's back on the vidme service. You can watch here:
The 4 video shows the unmanned aircraft rising all the way up to 3,4 kilometers above the ground. At this altitude, drone flies over a layer of clouds. With only 27% battery, the operator decided to start the descent back to Earth. At the time of landing it was just 4%.
Needless to say, this is an extremely dangerous and illegal trick, and the operator is hailed as an "idiot" in comments which he has received from his video. The drone at this height could collide with a helicopter or small plane, or it could plummet to the ground from a high altitude if it ran out of battery with the potential to kill or injure.
So if you don't want to put your fellow man's life in danger and find yourself accused, don't ever try this with yours machine.