I wonder if the geometry of crinkled aluminum foil has been studied?

The above is a photo of foil I flattened to reuse.
It might be described as a partition into nearly-uncreased polygons,
each polygon of not too many sides, and arranged in a
rather un-Voronoi like pattern.
It superficially resembles a rugged mountain terrain seen
from a great height.

I searched a bit for some mathematical analysis of this pattern without luck. Has anyone seen such an analysis? There might be some interesting mathematics here...

**Update**.
Here is Fig.1 from the *PNAS* article that *jc* identified, "Three-dimensional structure of a sheet crumpled into a ball," by Anne Dominique Cambou and Narayanan Menon,
slices through an equatorial plane of three crumpled spheres: