Yosemite Falls, California Yosemite National Park, home to Yosemite Falls. (CC BY 2.0 ©2013 edward stojakovic) Yosemite Falls was thought to be the highest waterfall in the world when Halliburton wrote this book. It is now known to be Angel Falls in Venezuela. (CC BY 2.0 ©2014 Michael Costa) Half Dome Mountain, in Yosemite Park. (CC BY-SA 2.0 ©2011 Victor R. Ruiz)
