The oldest known living tree in the world is *Methuselah, a **Great Basin bristlecone pine* (Pinus longaeva) located in California's *Inyo National Forest. Estimated to be around **4,855 years old*, Methuselah's exact location is kept secret to protect it from potential damage.
Previously, the title for the oldest tree was held by *Prometheus, another bristlecone pine, which was cut down in **1964* and was estimated to be over *4,900 years old*.
Other notable ancient trees include the *Alerce Milenario* in Chile, potentially over *5,400 years old, and the **Sarv-e Abarkuh* in Iran, which is at least *4,000 years old*. These remarkable trees offer a glimpse into the Earth's long history and resilience.