One of the coolest moments for me was walking up to a notch that was probably 3/5 of the way up the tree. The notch still had a large chunk of soil attached to it, with mosses and ferns growing out of it. From the ground, you can see these notches and gardens growing on the standing trees. Only a handful of tree climbing scientists get to examine the contents. I peeled off a chunk of the soil that probably took decades if not centuries to accumulate on the notch, and pretended to be a scientist.