The 'National Geographic Traveler' Photo Contest is upon us, and some stunning images have already started to flow in.
The contest is in its 25th year and asks amateur photographers to submit photos from their travels for a chance to have them published in the magazine. More than 3,000 shots have already been submitted (you can see all of them here), and so far, the results are breathtaking. Images of an alligator resting on the back of a turtle and another of two vultures battling are particularly stunning.
The contest will be open until June 30, 2013 and entries cost $15. Click here to check out some past National Geographic photos, and take a look some of this year's incredible submissions below: