Excerpt from The Skystone, Vol. 1: A Romance of Prehistoric Arizona In the Salt River valley, in central Arizona, the ruins of at least seven large cities are conspicuous, and the lines of ancient irrigating canals can be traced over the level land for miles. It has been assumed, with some reason, that the ancient inhabitants of the valley were akin to the pre Aztec race that built the grand temples that yet rear their heads in Mexico and Central America. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.