DescriptionBigrock.jpg English: Big Rock (glacial erratic). Big Rock (also known as Okotoks Erratic) is a glacial erratic situated between the towns of
described at URL: https://www.flickr.com/photos/saumag/12293336053/ operator: Flickr URL: https://live.staticflickr.com/7447/12293336053_35e71a7c14_o.jpg