Neotoma rodents (woodrats) in a nest (IMAGE) Syracuse University Caption Neotoma rodents (woodrats) in a nest, also known as a midden, at City of Rocks National Reserve in Idaho. Pictured are both a modern and ancient midden. Credit Syracuse University Usage Restrictions None License Original content 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.