Since 1903, #NatGeoExplorers have carried the National Geographic Society flag across land, sky and sea. We passed this emblematic flag around the world leading up to the opening of the National Geographic Museum of Exploration in Washington, D.C. Now, we're passing it on to you. Join us at the natgeomuseum and unlock your inner explorer. #PassTheFlag 🟦🟫🟩 Media courtesy of National Geographic Society's Special Collections