A biker rides a motorcycle down a steep mountainsideA biker rides a motorcycle down a steep mountainside
A stream of waterfalls descend down into the riverA stream of waterfalls descend down into the river
A shot from the movie, a man running down the street to a payphoneA shot from the movie, a man running down the street to a payphone
По направлению к низу, к земле. По направлению течения реки.