Like dancing mice, only dumber.
Glacial Erratic: A boulder carried a long distance by glaciers and deposited when the glacier melted. They tend to be smooth and rounded, polished by glacial action.
Glacial Erratic: A boulder or chunk of rock moved from its origin and, then left behind by a receding glacier.
An erratic's makeup may not match the rocks naturally in an area, and they are often large and isolated, sitting on top of the ground.
May be any size, even the size of a house.
Glacial Erratic: A rock or stony fragment transported by a glacier and deposited far from its origin.
Erratics range in size from a gravel to giant boulders.
Glacial Erratic: A rock transported by glacier from a distance to its current location.