Excerpt from The Mammoth Cave, Kentucky The wonderful work of water of water in sculpturing the surface of the earth is matter of common observation and of common remark. Hill and valley, gorge, can and waterfall, all have been seen in intimate relation; rock so hard that it can forever resist the action of the stream; mountain mass so great that it will t some time yield entirely to water; valley so deep it may t be graven deeper or even filled to top by the transporting power of running streams. These changes all occur on the surface, and from our familiarity with them fail, often, to engage our close attention. 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 techlogy 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.