Summer snows rest eternally on the high, craggy peaks of the Russian Caucasus mountains where the loftiest pinnacle in Europe, Mt. Elbrus, reaches 18,481 feet into the sky. Yet the deep green ...

Iran's folded rocks are a colorful formation that is part of the Greater Caucasus mountains, which formed when the Eurasian tectonic plate collided with the Arabian plate millions of years ago.