This is a photo of Mont Blanc, the tallest mountain in Europe. But it's not just any photo: it's actually just a small part of a panorama comprised of 70,000 pictures and 365 gigapixels. In 2014, a team of photographers led by Filippo Blengini spent 35 hours overall within two weeks -- in temperatures averaging 14F at an altitude of 11,500 feet -- taking as many pictures as they could of the mountain. They used a Canon 70D DSLR with a Canon EF 400mm f/2.8 II IS lens and an extender, all attached to a robotic mount. It then took them two more months to stitch all 46 terabytes of pictures together to create a panorama, which they claim is the world's largest photo.