Pando, a massive aspen clone weighing over 80,000 tons, is the oldest, largest and heaviest known organism on Earth. This ancient forest in Utah's Fishlake National Forest contains over 40,000 genetically identical tree stems emerging from a single root system estimated at 80,000 years old.

Pando, a massive aspen clone weighing over 80,000 tons, is the oldest, largest and heaviest known organism on Earth. This ancient forest in Utah’s Fishlake National Forest contains over 40,000 genetically identical tree stems emerging from a single root system estimated at 80,000 years old.