Nestled south of Laiwu City at the foot of Lianhua Mountain, Canglong Gorge lies on a tributary of the upper Dawen River. The gorge plunges dozens of meters deep, flanked by steep opposing cliffs covered with intertwined ancient pines and cypresses that form a thick canopy blocking sunlight. Natural karst caves dot the gorge walls — some as spacious as living rooms, some unfathomably deep, and many interconnected with one another, lined with grotesque rock formations of great ornamental value.
Inside the gorge lie cascading waterfalls, trickling springs and exotic stones. The water is emerald and crystal clear. Sunlight filters through tree gaps and shimmers across the water surface, scattering countless colorful rays.
After heavy summer rains, torrential floodwaters surge down the gorge, sending water mist soaring dozens of meters high. The thunderous roar echoes for miles, resembling a giant black dragon taking flight. This spectacular sight, known as "Thunder Roaring in Black Dragon Gorge", ranks among the Eight Ancient Scenic Wonders of Laiwu. An ancient poem praises it:
"No heavy clouds hang overhead, yet thunder rumbles low;
Little do men know within the dragon gorge, wild waters surge and flow."