© 2020 Jim Cole, All Rights Reserved.
This is viewing blind at the end of the Pintail/Egret Marsh boardwalk in the Ankeny National Wildlife Refuge. It is an example of confinement with purpose. In this case, visitors are confined in a small space in order to observe wildlife without disturbing it.
Nikon D300, Nikkor 10.5mm fisheye, Nodal Ninja 5, PTGui, Photomatix, Photoshop