Checking out erratic rocks?

Hmmm. Erratic rocks are rocks that the glacier has deposited as it retreated. They deviate from the size and type of other rocks around – basically stick out like a sore thumb. This one we saw during our horseback ride was at least 20 ft. high, and obviously hadn’t tumbled down from anywhere in the vicinity. Even though it seemed like the wind was strong enough to push it out there!