The series of photos used in our materials as “80 Years of Change in a Ponderosa Pine Forest” makes a rather clear case that the forests we see are not the state they were before human settlement.
Suppression of natural fires has dramatically changed the ecosystem. But living in the forest, it’s not like we can just let fires burn.
It looks like to me the photos are from Photo Point 13 (page 75 in the report). I took some copies of the images, and put them into the form of an animated GIF image, so you can see it play back more like a flip book movie. That old tree in the center is gone by 1958.
A good question to ask, what will this look like in the future?