The Monuments of Mars: A City on the Edge of Forever

In 1976 NASA sent four Viking spacecraft to Mars to photograph the planet including a mile-long mesa that uncannily resembles a human face. In this wide-ranging and profound analysis of the Mars data Hoagland takes readers step by step through these NASA images and the evidence that a highly advanced civilization may have lived and built upon Mars hundreds of thousands of years ago. 50 photographs; 10 line drawings; maps and charts.