在一次河水泛滥过后，这些树生长，后来环境骤变，沼泽干涸，致使个沙丘堆积，阻断了这片区域的水源。
The trees grew after a river flooded then, with a sudden environmental change, the marsh dried up. This caused sand dunes to build up4 and block the area from water.
大自然的图案：倒影。一块沼泽地在新墨西哥的博斯克德尔阿帕奇国家野生动物保护区反映一群沙丘鹤。
A marsh in New Mexico's Bosque del Apache National Wildlife Refuge reflects a group of sandhill cranes.
纳米比亚的死亡沼泽中有世界上最高的沙丘，还有有毛骨悚然的枯树，这些枯树看上去仿佛来自某个人的噩梦。
Thee Dead Marsh in Namibia is home to the highest sand dunes2 in the world as well as tons of creepy3, dried out trees that look like they're from someone's nightmare.
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