We visit the Desert National Wildlife Refuge, where our old friend Jim Boone introduces us to the seven life zones contained within the refuge's borders. We drive into the area known as the outback and encounter fossils from the time when this area was beneath the sea, a stunning and expansive yucca forest, and transition from the desert into the mountainous portion of the refuge where the pines dominate. On day two we delve into the Visitor Center and follow the extremely accessible interpretive trails, where we learn much about this region, including a visit to a special aquarium exhibit.