National Geographic is once again holding their annual Photo Contest, with the deadline for submissions coming up on November 30th. For the past eight weeks, they have been gathering and presenting galleries of submissions, encouraging readers to rate them as well. National Geographic was again kind enough to let me choose some of their entries from 2010 for display here on The Big Picture. Collected below are 47 images from the three categories of People, Places and Nature. Captions were written by the individual photographers.