More from The National:
Tuesday's best photos: from polluted Mongolia to stingless bees
Monday's best photos: from the Bird's Nest stadium to a light installation in Battersea
Sunday's best photos: from Uncle Sam at a rally to migrants hampered in Guatemala
Saturday's best photos: from Northern Lights in Finland to elephants in Sri Lanka
Friday's best photos: from a rare snowy owl in the US to a frozen lake in France