While Arizona is famous for its stunning landscapes and dramatic rock formations, some of the best things to see here are underground. Arizona has numerous famous caves — some readily open to ...

Ready for a road trip? There are many scenic Arizona road trip routes, short and long, exploring the cities and natural ...

Former UA doctoral student Marian Ortiz samples microbes that live on the surface of stalactites and other mineral deposits in Kartchner Caverns. This visual may only be used in conjunction with ...