Located in the Wulingyuan district of Zhangjiajie City in China, Huanglong Cave is a karst cave known for huge stalagmites & colorful illuminations. As a national 4A rated scenic area, the cave has millions of visitors per year.
In addition to the cave itself the Huanglong Cave scenic area includes Huanglong Cave Ecology Square, completed in 2009 by restoring the landscape of the area adjacent to the cave entrance. In 2010, the "Hallelujah Concert Hall" with a grass-planted roof was also constructed as the centerpiece to the Ecology Square, not far from the cave entrance.