This Nature reserve is located in Khatanbulag sum of Dornogobi province. Distinctive natural formation plateau of the Gobi plain terrain that is containing remaining of ancient world dated to 30 million years. Purpose of keeping natural virgin formation, the nature reserve was proclaimed in 1996 to protect the land of 60,900 hectares, which preserving the "nature art" - numbers of imprints of ancient animals.
Also some skeletons of giant dinosaurs were discovered in Ergeliin Zoo Natural Reserve. The rocks of Ergeliin Zoo Natural Reserve are World famous for its paleontological remains of Dinosaurs of the Mesozoic Era.
Ergeliin Zoo is named by Altan Uul /Golden mountain/.
