Have you ever camped in a sandy place? Was the wind blowing and grit collecting in your ears, hair, tent and food? Despite being annoying at times, sand and its “parent,” sandstone, are fascinating to ...

The Coconino sandstone at Grand Canyon means many things to many people. To the hiker, it indicates that he or she is almost at the top. To the artist, it is a graceful sweep of sculptured stone, and ...