The mysterious "shi bo" located at the junction of Utah and Arizona evolved from sand dunes 65.438+0.9 billion years ago. In the gap of less than 200 square meters, the red sandstone billows like waves, and the wonderful combination of rigidity and flexibility is amazing. Touch the exquisite wave trace along the grain of sandstone, as if you can still feel the elaborate design and carving of sandstorms hundreds of millions of years ago.