This is a giant sequoia video from the USA.
From Associated Press in the USA:
Redwood in Remote Northern Calif. Forest Measured as Tallest Living Thing at 378.1 Feet
REDWOOD NATIONAL PARK, Calif. Sep 8, 2006 — A redwood in a remote Northern California coastal forest has been tentatively measured as the world’s tallest living thing.
The tree called Hyperion stands at 378.1 feet, eight feet taller than the previous record holder, another coast redwood dubbed Stratosphere Giant in a state park about 90 miles south.
Two amateur California naturalists found the tree earlier this summer during a bushwhacking expedition in search of tall trees.
Chris Atkins, credited with discovering the Stratosphere Giant in 2000, and Michael Taylor returned later with scientists to obtain more exact measurements of the tree’s height using a tripod-mounted laser.
The team also identified two other redwoods in the same forest taller than the reigning record holder: a tree called Helios at 376.3 feet and another called Icarus at 371.2 feet.
Officials would not pinpoint the exact locations of the trees out of concern that too many visitors could damage the delicate ecology of the mild, foggy slopes where the trees live.
Metasequoia: Dawn Redwood: here.
Corsham Court Oriental plane ‘most spreading tree in UK’: here.
Scientists have developed a mathematical model that predicts the maximum height trees can reach in particular environmental conditions: here.
Big trees, like the old-growth forests they inhabit, are declining globally: here.
Dear Kitty. Some blog 
Searching for some of these groves has been fun. I did not look for Hyperion the past year, but did find two groves with the largest redwood:
Atlas Grove / Grove of Titans
Also with trees discovered by Taylor (and Sillett).
If I take a full week vacation to the redwoods next winter, I may dedicate 2 days to search for Hyperion.
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Hi M.D. Vaden, thanks for this additional information.
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Howdy.
Stumbled by again – have an update for your page.
Found Hyperion in January.
In the link provided earlier, an image of Hyperion Redwood is provided. I don’t think another photo exists online. Anyhow, that’s what it looks like – a redwood tree.
Cheers,
MDV
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Hi MDV, thanks and good luck.
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A GREAT BIG TREE
May I be a great big tree
so big I can’t see those taking shelter under me,
a deep green conical figure wrapped in serenity
Just as I dangle my bare feet in the water
may my roots joyfully draw
from an unknown subterranean current
May I be such a great big tree
that those who look at me
will naturally feel peace and repose
Yet may my luxuriating branches and leaves
whisper to a breeze like stray hair
May they awaken before anyone else in the rosy glow of morning
May their blue shadows be cast on earth
spreading like a trailing lace skirt
May my thoughts be kind
May my thoughts be refreshing
The tree will not move
The tree will not speak
yet may it be a ladder heavenly children ascend and descend
If someone comes and rests by me at the height of day
I will provide deep shadow and infinite comfort
On a stormy day
I will be even greater, more stalwart
I will firmly anchor my roots in the great earth and will not sway
Yet my sap will flow smoothly
even my incised wounds will issue forth a refreshing scent
Soon I will whisper a smiling song
When night arrives I will dissolve into darkness
unbeknownst to people
may the song alone become invisible ripples
Kiyoko Nagase
© Nao Inoue
© Translation: 2009, Takako Lento
Poem of the Week:
http://international.poetryinternationalweb.org/piw_cms/cms/cms_module/index.php?obj_id=15053
Kiyoko Nagase page:
http://japan.poetryinternationalweb.org/piw_cms/cms/cms_module/index.php?obj_id=14971
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Saving the Redwoods, Saving Ourselves
http://my.firedoglake.com/hotflashcarol/2012/12/02/saving-the-redwoods-saving-ourselves/
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