Cataglyphis fortis (IMAGE) Max Planck Institute for Chemical Ecology Caption Desert ant Cataglyphis fortis on its nest mound. This elevation helps the ants find their way home after their long foraging journeys. However, they only build clearly visible nest entrances when other visual landmarks are lacking. Credit Markus Knaden, Max Planck Institute for Chemical Ecology Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.