Graphicgrrl
Box Canyon Falls at Ouray, Colorado 
Black Canyon of the Gunnison National Park The Black Canyon contains some of the oldest exposed rock on Earth. Precambrian, or “basement” rock, is nearly 2 billion years old. (Source: nps.gov)

Black Canyon of the Gunnison National Park The Black Canyon contains some of the oldest exposed rock on Earth. Precambrian, or “basement” rock, is nearly 2 billion years old. (Source: nps.gov)

WHAT IS YOUR EARLIEST HUMAN MEMORY?

Probably watching Sesame Street