Teobert Maler was a German-born explorer, photographer, and scholar who is known for his explorations of the Maya ruins of Mexico and Central America. This book recounts his expeditions in the Upper Usumacinta region of southern Mexico and adjacent Guatemala, where he documented the Maya ruins at Altar de Sacrificios, Seibal, Itsimté-Sacluk, and Cankuen. With detailed accounts of his archaeological and geographical discoveries and ample photographic documentation, Maler's work is an invaluable resource for scholars and enthusiasts alike. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.