GeologyRocks

Two hundred million years ago, Washington was two large islands, bits of continent on the move westward, eventually bumping up against the North American continent and calling it home. Even with their new fixed address, the shifting continues; the more extreme movement has subsided laterally and continues vertically. The upthrusting of plates continues to move our mountain ranges skyward – the path of least resistance.

The Columbian Mammoth, the official state fossil of Washington, crossed the Bering Land Bridge into North America some one million years ago and made a home roaming the vast grasslands that stretched from Alaska to Mexico, mirroring the great Rocky Mountains, and munching down about 300 pounds of vegetation each day. During the Pleistocene this extinct elephant extended his habitat down into Central America to modern day Nicaragua and Honduras before dying out around 12,500 years ago.