What makes this pack rat nest so cool is not the nest, but the location. The person who owned the home where this was located was a wood carver. The figures you see above, are life size wood carvings. To create a genuine southwestern them, he added an old mine cart and built fake mine shaft.
The wall of mine shaft is where the pack rat built its home. You can see a hole leading to the nest at the base of the wall with some cholla protecting it.
A few feet away another pack rat built a home under an old wooden barrel.
The lesson to be learned is that a pack rat will build a home anyplace they can find shelter.