The Sea Hole is gasping below a huge cliff of the Lotus Peak which is very steep and covered with thick foliage. The Sea Hole is 3 meters long in diameter with an unfathomable bottom, surrounded by apparently volcanic lava rocks. This natural geological landscape constitutes a specialty of the Tiejue Mountain Scenery Zone. From ancient times, people believed that the sea hole is connected with the South Sea and the heavenly islands in the sea. This is a site for scientific research, sightseeing, and best wishes.