UTAH: Pando (The Trembling Giant) is a clonal colony all determined to be part of a single living organism and one massive underground root system, although whether it is a single tree is disputed, as it depends on one’s definition of an individual tree. The plant is estimated to weigh collectively 6,000 tonnes (6,615 tons), making it the heaviest known organism. Also it is claimed by some to be among the oldest known living organisms in existence at 80,000 years of age.
Pando is located in the Fishlake National Forest, near Fish Lake on the Fish Lake Plateau located at the western edge of the Colorado Plateau in South-central Utah. The name "Pando" was chosen because it is Latin for "I spread".