Grand Canyon, USA. (image) Geological Society of America Share Print E-Mail Caption A figure stands on Esplanade surface opposite Vulcan's Throne volcano, Grand Canyon, USA. Photo by J.W. Sears. Credit Photo by James W. Sears Usage Restrictions Credit to photographer J.W. Sears Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.