@CNN: This guy was worried about the Grand Canyon, so he decided to hike it. All of it. https://t.co/dJIVBcMMMn https://t.co/aq8mIk2H1L

@CNN: This guy was worried about the Grand Canyon, so he decided to hike it. All of it. https://t.co/dJIVBcMMMn https://t.co/aq8mIk2H1L