All Available Episode All Season 1 Episode 1. Grand Canyon May, 2015 44 minutes 0.0 2. Yellowstone May, 2015 44 minutes 0.0 3. Everglades May, 2015 44 minutes 0.0 4. Smoky Mountains May, 2015 44 minutes 0.0 5. Yosemite May, 2015 44 minutes 0.0 6. Olympic May, 2015 44 minutes 0.0 7. Saguaro May, 2015 44 minutes 0.0 8. Gates of the Arctic May, 2015 44 minutes 0.0
