International Earth Cache Day

Today was International Earth Cache Day so, despite feeling lousy with a cold, I organized a quick single-stop geocaching trip for my family. There was an easy Earth cache located in a neighbourhood near us, so easy that we could see it as we drove up. Erratic Behaviour in Edgemont (GC1Q1KY) is one of several Glacial erratics that can be found in Calgary.

An erratic is a large rock that was deposited on top of a glacier as it moved past mountains. As the glacier melted or receded the rock was left behind, often miles from the mountain from which it originated. In Alberta we have a strip about 640 kilometres wide that runs from the Athabasca River Valley to the southern end of the province which contains thousands of rocks from tiny pebbles to large boulders left behind by a receding glacier. These rocks are thought to have originated from near Mount Edith Cavell in Jasper National Park.

 Another famous erratic that is the largest known glacial erratic in the world is found in Okotoks, just south of Calgary. Big Rock is a 15,000 ton quartzite boulder and is also an earthcache known as Where the Beer Got It's Name (GC2388). (The Big Rock Brewery in Alberta took its name from this rock.) 

To log an earth cache as found, instead of finding a hidden container,  you need to e-mail the cache owner the answers to questions they have posted in the description of the cache. Usually these questions help confirm that you were present at the cache site. For instance, the owner of an erratic cache might ask you to estimate the size of the rock or identify what minerals are in the rock.

Did you take part in International Earth cache Day? What interesting earth cache did you discover?