On this date 100 years ago, one of the world's greatest natural wonders — and Arizona's pride — officially became Grand Canyon National Park. Happy Birthday @grandcanyonnps! 🎂🎉 Mark Klett and former student Byron Wolfe and writing by Regents' Professor Stephen Pyne and Rebecca Senf. The images look at a reconstruction of views of one of the most iconic National Parks in the U.S. All images belong to Mark Klett and Byron Wolfe. 📸: @asunow @asuschoolofart @asuherberger #ASUSOLS #GrandCanyon100 #arizonastateuniversity #asu #arizona