Flaming Cliffs, located in the Gobi Desert of Mongolia, is one of the most famous dinosaur sites in the world today. In the 1920s, an expedition from the American Museum of Natural History, led by Roy Chapman Andrews, yielded the first dinosaur eggs at this site. It was closed for many years, but in the late 1980s the site was reopened to scientific study and dinosaur fossil gathering. Since that time, numerous findings have continued to occur in this dinosaur-rich area.
While many dinosaur fossils have been uncovered in the western United States, important finds are being made in such countries as China and, shown here, remote Mongolia. Government restrictions can make obtaining permits for digs in these areas very problematic (iStock).