Pando, also known as the Trembling Giant, is an extraordinary grove of quaking aspen trees (Populus tremuloides) located in Fishlake National Forest, Utah, USA. What makes Pando unique is its interconnected root system, making it one of the oldest and heaviest living organisms on Earth. While the individual trees may appear distinct, they are genetically identical and connected by a massive underground network of roots. Pando's origin dates back thousands of years, and estimates suggest it could be as ancient as 80,000 years, making it among the oldest living organisms on the planet.