在這「一線天」的嶂谷西側，見到岩壁上有一條「白蟒」張著大口惟妙惟肖。其實它不是蟒蛇的化石，而是組成岩壁的白雲岩中，由於燧石條帶不規則分布，經風化後形成突出在岩壁上的一種擬態。
boa-like pattern on cliff
on the west cliff of the narrow gorge, there is a vivid white boa-like pattern. actually, it is not a real fossil boa, but the irregularly distributed chert bands on the dolomite cliff. after a long-term weathering, these chert bands look like a huge boa.