One of the first things you learn when you take a Geology 101 class is that past geologic events can be explained by modern day processes. In other words, the present is the key to the past. When we visited the edge of the Greenland Ice Sheet last week, we noticed rows of boulders just in front of the ice sheet. Presumably deposited relatively recently because of their position right in front of the modern ice.
Today, Patrick and I were studying the landforms near Mt Sugarloaf, so that we could gain a better understanding of some of the landforms created by the ice sheet. We came across this boulder train and it somehow seemed familiar. The present is the key to the past. Pretty cool, eh?