"Dragon's Back" is a unique landform located in Nguyen Binh commune. Essentially, it's a karst leveling surface at an altitude of approximately 700-800 meters, stretching for kilometers, resembling a dragon hiding in the mountains and forests from afar.

A "karst leveling surface" is understood as a series of karst landforms at the same altitude, except for a few remaining karst cones protruding, resembling a dragon's back. The formation of a karst leveling surface in this area is due to erosion and leaching over a long period under relatively stable tectonic conditions.

Beneath this leveling surface lies a limestone valley extending over 3 km in length and nearly 1 km in width, developing in a northeast-southwest direction. The clusters of settlements and terraced rice fields of the highland people are interspersed, forming an integral part of the area's landscape.

The presence of a leveled karst surface at an altitude of 700-800m is not only aesthetically pleasing but also provides evidence that, approximately 5 million years ago (during the Pliocene epoch), the tectonic environment in this area was relatively stable.