While the breeding grounds further north are often at an altitude of 4,000 meters or more, the wetlands of the Yarlung Zangbo Grand Canyon are less than 3,000 meters above sea level.

尽管更北边的黑颈鹤繁殖地海拔通常超过4000米，但位于雅鲁藏布大峡谷入口处的湿地海拔不到3000米。

Due to the remoteness of its location and the difficulty of getting there, it was not until 1994 that China's scientists finally confirmed the Yarlung Zangbo Grand Canyon as the deepest canyon in the world.

由于地处偏僻位置，交通不便，直到1994年之后，中国科学家才最终确认雪山脚下的雅鲁藏布大峡谷就是世界上最深、最大的峡谷。