National Geographic Experts
A National Geographic expert will accompany each departure to share insights and a rare behind-the-scenes perspective. Listed below are some of the experts and the departure date(s) they will be joining.
Mark Thiessen
Mark Thiessen began shooting for National Geographic in 1990. His numerous articles for National Geographic magazine include "Monsters of Madagascar" (August 2000), "Russian Smokejumpers" (August 2002), and a recent series on wildfires. His images have been published in National Geographic Traveler, National Geographic Adventure, and the National Geographic books Baseball as America and Return to Midway.
Dan Westergren
As senior photo editor for National Geographic Traveler magazine, Dan Westergren is responsible for the magazine's photographic vision and one of the leaders of the magazine's photo workshop series. While Dan particularly enjoys cold, high places, having photographed the summits of Mount Kilimanjaro, Mount Blanc, and the Matterhorn for the pages of Traveler, he is equally at home in warmer climates as well.
