Cinematic 4K. Aerial. A meander, in general, is a bend in a sinuous watercourse or river. A meander forms when moving water in a stream erodes the outer banks and widens its valley and the inner part of the river has less energy and deposits silt. Flight fly foliage green color landscape meander range nature outdoors river riverside corrugated curled meandering twisted curly serpentine curved arcuate arched arcuated cambered crooked warped skew irregular wry curved sinuous wavy alternating rough corrugated undulating choppy oval elliptical ovoid elliptic river creek water. A stream of any volume may assume a meandering course, alternately eroding sediments from the outside of a bend and depositing them on the inside. 3840×2160 UHD 4K.