United States or Guinea-Bissau ? Vote for the TOP Country of the Week !
All these volcanic mountains can be seen from Hopi or Yavapai points, near El Tovar. The Algonkian Strata. The Algonkian strata of the Grand Canyon are by far the most interesting; Major Powell was the first to call attention to their existence in his report of explorations of 1869-1872, and he discusses their origin and history as far as was possible with the small amount of data he had at hand.
Word Of The Day