It really speaks to something when I'm rooting (no pun intended) for a Kiwi vine to find the pole, like "come on buddy you can do it". Very satisfying to watch.
Anything you'd normally do with soil...? Remove other things that start to grow, check how dry it is by pushing your finger into it (therefore moving it around), and parts of the soil itself decomposing so stuff moves over time, bugs crawling around etc. Such a long time lapse of almost anything will have it move and change more than what you can notice normally.