New Ways to be Engaged, Energized, and Inspired! Smithsonian Active Journeys by Mountain Travel Sobek are culturally enriching, small-group journeys that include walking, hiking, rafting, or biking elements. You don't need to be a top athlete to enjoy our newest style of travel! You know your physical limits best so just call one of our travel specialists at (833) 254-6678 to discuss which Active Journeys itinerary is right for you. Or register your interest on the individual tour page and we will reach out to answer any questions you may have.