First of all, Thanks to the Hakai Institute for such an informative video. Ideal for a lay person. My mom was a geomorphologist teaching at U Vic when I was a kid (late 70s, early 80s). My step-dad was a geologist working for B.C. provincial government (Ministry of Transportation??) and, thanks to having two geology nerds for parents, I was continuously exposed to the geology and geomorphology of B.C. Fast forward to 2022, and I am a technical diver, training to map (underground and underwater) caves in karst systems. So for me this video hit two areas of exposure/interest. Thanks again! Not sure if its possible to publish more details about the specific changes in topology...