In 2011, over 22,000 tons of legacy sediment were removed from the banks of Big Spring Run, transforming the steep, meandering river to a braided, gently-sloping system.

2011 年，Big Spring Run 河岸清除了超过 22,000 吨遗留沉积物，将陡峭蜿蜒的河流转倾斜的辫河道。

Judging by the geology, experts already knew that, about 70 million years ago, the Nemegt Formation was a seasonal floodplain, covered by a network of lakes and braided rivers.

地质学来看，专家们已经知道，大约在 7000 万年前，内梅格特组是一个季节性的洪泛区，被湖泊和辫河流网络所覆盖。