穿过了长峡谷（Long Canyon），和Grand Staircase--Escalante National Monument，最后到了布尔小路的终点Boulder。
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一道开阔的长峡谷在脚下延展开。
甘尼逊河在这条77公里长峡谷中的海拔落差超过了密西西比河从明尼苏达州到墨西哥湾这2400公里长度的海拔落差。
The Gunnison River loses more elevation in its 77 kilometer canyon stretch than the Mississippi River does in 2,400 kilometers from Minnesota to the Gulf of Mexico.
这些条纹有0.5码到5码宽，数百英尺长，比之前观测到的冲击峡谷要小得多。
The streaks range from 0.5 yards to 5 yards wide and stretch hundreds of feet, far smaller than previously detected gullies.
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