A Floating Meadow on the Water
Located approximately 12.5 kilometers northwest of Tengchong City in Yunnan Province, the Tengchong Beihai Wetland (Beihai Shidi) is a geological and ecological wonder nestled within the Gaoligong Mountains. It is recognized as China's only national wetland protection area situated in a volcanic barrier lake. The wetland was formed approximately 600,000 years ago when lava from a volcanic eruption blocked the river valley, creating a waterlogged basin surrounded by lush green peaks. What makes this wetland truly unique is its "floating land" phenomenon. Unlike typical marshes, the vegetation here has intertwined over thousands of years to form massive, thick mats of grass and reeds that float on the surface of the water. These floating islands, known locally as "Cao Pai" (Grass Rafts), are so dense and buoyant that they can support the weight of humans, creating a surreal experience of "walking on water" amidst a sea of green,.
The Sea of Purple Irises
While the wetland offers a serene landscape of reeds and calm waters year-round, it transforms into a breathtaking riot of color in late spring and early summer. From April to May, the floating grass mats burst into bloom with millions of wild purple irises (locally called Beihai Orchids). This spectacular "Sea of Flowers" turns the emerald wetland into a vibrant purple carpet, contrasting beautifully with the blue sky and the surrounding mist-shrouded mountains. This seasonal phenomenon attracts photographers and nature lovers from all over the country, offering a visual feast that is widely considered the wetland's most beautiful moment. Even outside the flowering season, the changing colors of the grass—from the lush green of summer to the golden hues of autumn—provide a picturesque backdrop for visitors,.
An Ecological Sanctuary
Beihai Wetland is often referred to as the "Kidneys of the Earth" for the region, playing a crucial role in water filtration and biodiversity. The unique ecosystem supports a rich variety of wildlife, particularly water birds. It is a paradise for birdwatchers, home to species such as the Purple Swamphen, wild ducks, and egrets that can be seen gliding over the water or nesting in the reeds. The air here is exceptionally pure, with high concentrations of negative oxygen ions, making it a perfect escape from urban pollution. Visitors can take traditional wooden boats or bamboo rafts to navigate through the maze of waterways, getting up close to the vibrant flora and fauna while listening to the symphony of nature.
Interactive "Grass Treading"
1.One of the most distinctive experiences at: Tengchong Beihai Wetland is the activity known as "Treading on Grass" (Cai Cao). Visitors can rent waterproof boots and step onto the floating grass mats. The sensation is akin to walking on a giant, water-filled sponge or a trampoline; the ground wobbles and ripples beneath your feet, yet remains surprisingly supportive. This fun and interactive activity allows you to physically connect with the unique geological structure of the wetland. For those seeking a more relaxed experience, the wooden boardwalks provide a stable path to explore the heart of the wetland without getting wet, offering panoramic views of the "One Lake, Two Seasons" landscape where the water and grass seem to merge into one.
