As I was walking to class today I was looking at the bike lock structure and I noticed that then I looked at it from an angle it looked like a meandering river.  A meandering river is when the current of the river erodes the bands of the side of a river giving it bends.  Once this anomaly occurs it may lead to a river looking like the bike lock structure.  Sometimes when a river forms this meandering look Oxbow lakes form. A Oxbow lake is formed when a s shaped river will straighten out forming bowed looking lakes where the river one was before it straighten out.