The Qinglong Mountain Dinosaur Egg Fossil Group, in the Yunyang district about 50 kilometres from central Shiyan, is a national nature reserve protecting one of the densest concentrations of fossilised dinosaur eggs found anywhere in the world. The site preserves eggs from the late Cretaceous period in their original sedimentary strata, displayed in situ under protective shelters that allow visitors to see the fossils as they were found rather than relocated to a museum.
Several species are represented in the egg beds, ranging in size from eggs the size of a grapefruit to larger spherical nests the size of footballs. A site museum provides geological and paleontological context and documents the discovery and excavation process. The fossils are scientifically significant enough to have attracted attention from international researchers; for general visitors, the sheer number and variety of the eggs and the setting in a forested limestone landscape make it a worthwhile excursion from Shiyan.