Redwood Rings
California redwoods, like this felled giant, are among the oldest and tallest trees on Earth. They often exceed 300 feet (90 meters) in height and reach diameters of 10 to 20 feet (3 to 6 meters) or more.
Photograph by Lindsey Holm

Redwood Trees

At up to 368 feet (112 meters) and 1,500 years old, redwoods are among the world's tallest and oldest living trees. Researchers are struggling to understand and protect these natural treasures.