What is the Most ancient forest?

The most ancient forest is often considered to be the "Old Tjikko" in Sweden, a clonal Norway spruce that is over 9,500 years old, making it one of the oldest known living trees. However, the "Methuselah" tree, a bristlecone pine in California, is also extremely ancient, at around 4,850 years old. In terms of ancient forests as ecosystems, the Taiga in Siberia and the temperate rainforests of the Pacific Northwest are among the oldest continuous forested areas on Earth. These forests provide vital habitats and showcase the resilience of nature through millennia.