During my residency at Zeleny Les I created a patchwork paper curtain with a wooden frame on either end. The curtain was hung in the woods with a small bench for a single person left inside.
The curtain successfully blocked all view of the outside except for the shadows of the trees and a upward into the forest canopy.
The space remained for three days before it was removed at the end of my stay.
Special thanks to Wayne Kleppe and Janette Chein for help with installation.