In Beijing, a city where history meets modernity, the Ripple Marks Sedimentary Structure stands as a breathtaking natural wonder. The rock surfaces here preserve ripple patterns formed by ancient water currents hundreds of millions of years ago, as if time stood still, allowing you to witness the mysteries of Earth's evolution firsthand. Geology enthusiasts won't want to miss this rare chance to observe these precious natural relics up close and feel the awe-inspiring power of nature's craftsmanship.