几百万年来，甘尼森河静静地流过孤独的黑峡谷。
For millions of years, the Gunnison River has been carving this canyon at work across eons of isolation.
在距离黑峡谷不远的-地方，Bill Dvorak从1982年起就在甘尼森峡谷保护区担任漂流和垂钓旅行的导游。
Not far from Black Canyon, Bill Dvorak has been guiding rafting and fishing trips in the Gunnison Gorge Conservation Area since 1982.
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