A time-lapse image blurs the silty, mocha-colored waters of the Colorado River as it flows through sheer cliffs in Grand Canyon National Park.

• 这是一幅在科罗拉多河流经大峡谷国家公园中险峻的悬崖时延时拍摄的的图像。图中，充斥淤泥，如摩卡咖啡一般颜色的的河水变得模糊。