Old growth redwood trees in Muir Woods, just above San Francisco, California. Average age is 600 – 800 years old; the eldest is 1,200 years old. The tallest tree here is 258 feet. Below image shows age rings of a tree born in the year 909.
Before the logging industry came to California, there were an estimated 2 million acres (8,000 km2) of old growth forest containing redwoods growing in a narrow strip along the coast. By the early 20th century, most of these forests had been cut down. (Wikipedia)