A giant mountain of sand dunes reflects into a spring-fed lake in the Alxa Desert Geopark in Mongolia's Gobi Desert.
When Swiss photographer Alessandra Meniconzi climbed the park's highest dune, the scene took her breath away.
"I have never seen scenery like this: thousands of small, wind-moulded dunes sunk into one huge one, the scene doubled in size by the reflection in the lake, so that I felt lost in the middle of a huge ocean of sand," she said.
"The only sounds were the soft whistle of the wind and early-morning birdsong. I felt regenerated."
Judge Colin Finlay commented that the image, an entry in the "Wild Places" category, is "much more interesting than many reflections pictures.
"The colors are slightly disturbing and not too easy on the eye, which lends a subtle power."
(See desert pictures.)