Gheorghe Popa/Drone Awards 2021
Romanian photographer Gheorghe Popa won the Abstract category with this image showing waterways in Geamăna, Transylvania, polluted with waste from copper and gold mining.
Sergei Poletaev/Drone Awards 2021
Sergei Poletaev of Russia won the Urban category with this image of a 500-year-old monastery near Moscow with a power plant behind it.
Wujiang Zhu/Drone Awards 2021
Wujiang Zhu of China was runner up in the Wedding category with this image of a newly-married couple in a garden in Dafeng, Jiangsu.
Terje Kolaas/Drone Awards 2021
Norwegian photographer Terje Kolaas won the overall prize with this photo of thousands of pink-footed geese in Levanger, Norway.
Igor Altuna/Drone Awards 2021
Spanish photographer Igor Altuna was runner up in the Wildlife category with this image of lions feeding on a buffalo in Zambia.
Phil De Glanville/Drone Awards 2021
Australian photographer Phil De Glanville won the Sport category with this surfing shot captured in Western Australia.
Trung Pham Huy/Drone Awards 2021
Trung Pham Huy of Vietnam won the People category with this image of a fisherman in a mangrove forest.
Paolo Crocetta/Drone Awards 2021
Italian photographer Paolo Crocetta came in second in the Abstract category with this shot of containers in Veneto, Italy.

Alexandr Vlassyuk/Drone Awards 2021
Alexandr Vlassyuk of Kazakhstan was runner up in the People category with this image of people lying on the ice in the Kapchagai reservoir in Kazakhstan.
Matteo Originale/Drone Awards 2021
Matteo Originale of Italy won the Wedding category with this image of a sunset in Marina di Pisa, Italy.
Pierluigi Orler/Drone Awards 2021
Pierluigi Orler of Italy was runner up in the Sport category with this image of a snowmobile in Bernau, Germany.
Martin Sanchez/Drone Awards 2021
US photographer Martin Sanchez won the Nature category with this shot of a volcanic eruption in Iceland.
Qasim Al Farsi/Drone Awards 2021
Oman's Qasim Al Farsi won the Wildlife category after capturing the moment a green turtle heads back to the sea after laying her eggs.
George Steinmetz/Drone Awards 2021
US photographer George Steinmetz came second in the Urban category with this image of the Kingdom Centre in Riyadh, Saudi Arabia.
Janessa Anderson/Drone Awards 2021
US photographer Janessa Anderson came second in the Nature category with this image of drifting ice sheets in Alaska.
CNN  — 

A turtle heading into the sea, a volcanic eruption and a spectacular sunset feature among the winners of the Drone Photo Awards 2021.

The overall winner is an image of thousands of pink-footed geese flying over snowy ground by Norwegian photographer Terje Kolaas, announced the Siena Awards, the international festival of visual arts that organizes the competition, in a press release Tuesday.

Alongside Kolaas’ amazing image there are category winners selected from tens of thousands of submissions from 102 countries, according to the organizers.

Terje Kolaas/Drone Awards 2021
The overall winner is this image of thousands of pink-footed geese by Norwegian photographer Terje Kolaas.

Russian photographer Sergei Poletaev won the Urban category with his image of a monastery near Moscow backed by a huge power plant, while Oman’s Qasim Al Farsi took first place in Wildlife with a shot of a green turtle preparing to return to the sea after laying its eggs.

Australia’s Phil De Glanville captured the moment surfer Ollie Henry took on a frightening wave to win the Sport category, and Vietnamese photographer Trung Pham Huy topped the People category with an image of a fisherman in a mangrove forest.

US photographer Martin Sanchez’s photo of a volcanic eruption in Iceland won the Nature category; Romanian photographer Gheorghe Popa won the Abstract category with his image of waterways in Transylvania poisoned by chemical waste from copper and gold mining; and the Wedding category was won by Matteo Original, from Italy, with an image of a sunset in Marina di Pisa.

The images will feature in an exhibition which will run in the Italian city of Siena from October 23 to December 5.