Our Story

Mark CalderAdventure Concierge

A veteran traveler who has visited 39 countries, Mark loves to share his global knowledge with anyone who will listen—so it’s appropriate that he holds a position as an Adventure Concierge at Nat Hab. His journey to the company was a long and convoluted one, though, which began in the United Kingdom where he was born and raised.

Mark caught the travel bug at a very early age as he traveled with his parents and sister throughout Western Europe and the Mediterranean each summer. By 19, he was ready to embark on an around-the-world trip on this own, focusing his exploration on Asia and Australasia. Among his many amazing experiences, Mark had a chance to volunteer at an orangutan rehabilitation center on the island of Sumatra.

Mark’s epic trip only fueled his passion for travel, and upon his return, he landed a job working for a small-group adventure travel company based in the UK. After two years as a sales consultant, he transitioned into a tour leader capacity, guiding trips in Egypt, Greece, Peru and Bolivia.

It was on one of his more memorable tours that Mark met his American wife. He was leading a group of 17 clients through Bolivia when they got tangled up in roadblocks that were the result of a nationwide political uprising. After spending a week stranded in the tiny mountain town of Sorata, Mark and his group—which included his soon-to-be wife—were rescued by Bolivian troops.

A year later, in 2004, Mark moved to Boulder to be with his fiancée, and they were married shortly thereafter. After relocating to the foot of the Rockies, Mark pursued a geography degree at the University of Colorado Boulder. Following graduation, he worked as a wildland firefighter in Colorado and Idaho and continues to work as a reserve firefighter and EMT a couple of weekends a month. When the chance arose to join Nat Hab in 2015, Mark jumped on it, excited to be back in the travel industry.

Our Story

Our Trips

Polar Bear Tours

African Safaris

A sea lion swims near the photographer underwater in the Galapagos Islands

Galapagos Tours

Alaska Adventures

U.S. National Parks Tours

Canada & the North

Europe Adventures

Mexico & Central America Tours

South America Adventures

Asia & Pacific Adventures

A close-up of two king penguins on South Georgia Island

Antarctica & Arctic Journeys

Photo Expeditions

Adventure Cruises

Women's Adventures

Family Adventures

New Adventures

Questions? Call 800-543-8917

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Hours
Mountain Time

  • 8 am to 5 pm, Monday - Friday

  • 8 am to 3 pm on Saturday

  • Closed on Sunday

Call 800-543-8917
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