In pictures: A bird's eye view
The winners of this year's aerial photography competition run by online site Dronestagram have been announced.
There were thousands of entries taken using drone cameras and the winners were selected by the judges - National Geographic deputy director Patrick Witty and Emanuela Ascoli, photo editor of National Geographic France - and Dronestagram's team.
Here we present the winning images from the four categories.
image copyrightJ Courtial image captionJ Courtial's picture of a lavender field in Provence, France, being harvested won first prize in the Nature category. He said: "I went to Valensole hoping to get an original picture rather than the classic view with the sunset in the background. I knew this was the beginning of the harvest season so I hunted down tractors and waited patiently until some started to harvest in a pattern that would create a pleasing composition from above." image copyrightCalin Stan image captionSecond place went to Calin Stan. He said: " This is the road that goes to Sighisoara, [Transylvania, Romania], Count Dracula's birthplace. The legend says that this is how he sees the country, in his nocturnal flights!" image copyrightFlorian image captionA sea ice formation in east Greenland was the subject of Florian's third place image. image copyrightBachirm image captionThe high-rise buildings of Dubai are the focus of Bachirm's winning image in the Urban section. image copyrightAlexeygo image captionAlexeygo captured the work of window cleaners at the Mercury City Tower in Moscow, Russia. image copyrightLuckydron image captionLuckydron took third place in the Urban section for this shot taken over Madrid in Spain, titled Peace. image copyrightMartin Sanchez image captionMartin Sanchez won first place in the People section for this picture titled End of the Line. He said: "When you walk around a new world perspective, you forget what is up and what is down." image copyrighthelios1412 image captionA picture of a woman harvesting water lilies in a pond in the Mekong Delta in Vietnam by helios1412 took second place. image copyrightfeelingmovie image captionFeelingmovie won third place for this picture of La Vijanera, a winter masquerade that takes place in the town of Silio, in Cantabria, Spain.
This year there was a special category to recognise the creativity of the Dronestagram community.
image copyrightLukeMaximoBell image captionTwo cows take a morning drink as their shadows are cast across the water in Luke Maximo Bell's picture. image copyrightmacareuxprod image caption"My girlfriend and me will be soon new parents, so this picture was a funny and original way to announce the news to our friends and family, inspired by old school video games," says Thibault Beguet of Macareux Productions. image copyrightRga image captionAnother image made in sand was chosen in the Creative section. The photo taken by Rga shows Ugo in difficulty in the open sea. All photographs courtesy dronestagr.am .