Hyperion is the name of a coast redwood (Sequoia sempervirens) in Northern California that was measured at 115.61 m (379.3 ft), which ranks it as the world's tallest known living tree. After 2013, new tall coast redwoods were found, research reports omit tree names, and previously known tallest redwoods grew, fell, or lost height. An unnamed coast redwood exists, between 115.71 m (379.6 ft) and 118.87 m (390.0 ft) tall.
Hyperion was discovered August 25, 2006, by naturalists Chris Atkins and Michael Taylor. The tree was verified as standing 115.55 m (379.1 ft) tall by Stephen Sillett. The tree was found in a remote area of Redwood National and State Parks purchased in 1978. The tree is estimated to contain 530 m3 (18,600 cu ft) of wood and to be roughly 700–800 years old.
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