Sillett Branchwalking Zeus. The red box shows Steve Sillett standing out on a branch in the crown of Zeus, the tallest redwood in the Atlas Grove. He’s throwing a line into Rhea (chapter "Journey to Kronos"). Preston, 60 feet below Sillett, took this photograph. The crowns of giant redwoods can be thickets of gnarl. Zeus Tree is thought to be 1800 years old or more. Photo by Richard Preston, © Richard Preston