It could easily be mistaken as a CGI photo, given the stunning improbability of capturing a lightning bolt striking an angry, erupting volcano. But that's precisely what earned a Mexican photographer the title of 2017 National Geographic Travel Photographer of the Year.
Selected from more than 15,000 entries from participants in more than 30 countries, the photograph by Sergio Tapiro Valesco captures volcanic lightning – also known as a dirty thunderstorm – whereby a flash of lightning is produced within the ash cloud spewing from the volcano.