Excerpt from Phytologia, Vol. 78: May, 1995 Landforms in the vicinity of E] Charco include the narrow valley of the Rio Laja; crumpled piedmont rising westward from the river towards the Sierra de Guanajuato; and most prominently the Los Picachos Mountains, an ancient volcanic formation, rising to 750 m above El Charco; a rim of low-elevation rhyolitic mesas with which E Charco is identical in form and continues north from it, and on which the Ecological Reserve is sited; and old lake beds east of El Charco with drainage into the Presa de las Colonias along the southern shore, where much of the inner space of the gardens is situated. 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.