The oldest known tree in the world is a Bristlecone Pine named Methuselah, located in the White Mountains of California. This remarkable tree is estimated to be over 4,800 years old, making it one of the oldest living non-clonal organisms on Earth. Its exact location is kept secret to protect it from vandalism. Another ancient tree is a clonal colony of Quaking Aspen known as Pando, found in Utah. While individual stems of Pando are around 130 years old, the root system is estimated to be over 80,000 years old, making it one of the oldest living organisms. Both Methuselah and Pando highlight the incredible longevity of trees.