The Mountain Legacy Project, or MLP, is “an interdisciplinary collaboration focused on exploring change in Canada’s mountain environments. Utilizing over 140,000 images taken by land surveyors from 1861 – 1953, MLP researchers seek to re-photograph these images as accurately as possible and make the resulting image pairs available for further investigation”.
It compares the original landscape shown in the early photos with ones taken in the same place over the past few years. It allows you look at the changes in many thousands of places – mountains, valleys and so on – over time. And the results are incredible. While it documents the development of towns, roads, changes in land management, the impact of logging operations and wildfire, etc, the most striking aspect is the change to snowpack and ice fields during this time.