Tianmen Mountain is a famous natural landmark located in the city of Zhangjiajie, Hunan Province, China. The mountain is known for its unique rock formations, steep cliffs, and breathtaking scenery. The highlight of Tianmen Mountain is the spectacular Tianmen Cave, which is a natural arch that towers over the surrounding landscape. The cave is 131.5 meters tall and 60 meters wide, making it one of the largest natural arches in the world.

The area surrounding Tianmen Mountain is also known for its stunning natural beauty, including lush forests, crystal clear streams, and steep cliffs. Visitors can take a scenic cable car ride to the top of the mountain to enjoy the panoramic views and explore the many hiking trails and scenic overlooks.