Hyperion is the name of a coast redwood (Sequoia sempervirens) in Northern California that was measured at 115.61 metres (379.3 ft), which ranks it as the world's tallest known living tree. Despite its great height, Hyperion is not the largest known coast redwood; that distinction belongs to the Lost Monarch tree (based on trunk volume).
Hyperion was discovered August 25, 2006 by naturalists Chris Atkins and Michael Taylor. The tree was verified as standing 115.55 metres (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 exact location of the tree has not been revealed to the public for fear that human traffic would upset the ecosystem the tree inhabits. The tree is estimated to contain 18,600 cubic feet (530 m3) of wood, and to be roughly 700–800 years old.
In February 2012, Hyperion was featured in the BBC Radio 4 documentary James and the Giant Redwoods by James Aldred.
- Earle, CJ (2011). "Sequoia sempervirens". The Gymnosperm Database. Retrieved 2011-08-12.
- Preston, R (2006-10-09). "Tall for its age - Climbing a record breaking redwood". The New Yorker. Retrieved 2010-03-26.
- Schrepfer, SR (1983). The Fight to Save the Redwoods: A History of Environmental Reform, 1917-1978. Madison, Wisconsin: The University of Wisconsin Press. pp. 130–85. ISBN 0-299-08850-2.
- Preston, R (2007). The Wild Trees: A Story Of Passion And Daring. Allen Lane Publishers. p. 284. ISBN 978-0-8129-7559-8.
- Martin, G (2006-09-29). "World's tallest tree, a redwood, confirmed". SFGate. Retrieved 2009-08-09.
- "James and the Giant Redwoods - Part One". BBC Radio 4. BBC. Retrieved 25 September 2012.
- Hyperion Redwood: More Information Arborist M.D. Vaden's Hyperion page with clues
- Complete Tallest Redwoods List: with Hyperion & other tall trees of the world
- Video: World's Tallest Tree Towers Over California - National Geographic