Helan Mountain is a prominent mountain range located in the Ningxia Hui Autonomous Region of China. It stretches approximately 150 kilometers and serves as a natural boundary between the Loess Plateau and the Inner Mongolia Plateau. The area is known for its diverse ecosystems, including forests, grasslands, and unique rock formations. The mountain is also home to various wildlife species and is a popular destination for outdoor activities such as hiking and rock climbing. Additionally, the region has cultural significance, with ancient petroglyphs and historical sites that reflect the heritage of the Ningxia area and its indigenous peoples.