the.com/old growth forest

means A mature forest ecosystem that has developed over a very long time without significant human disturbance, featuring old trees, standing dead wood, fallen logs, and multiple canopy layers.

from The phrase is a straightforward 20th-century compound, not an ancient term — 'old growth' emerged in forestry and ecology circles to distinguish untouched, aged timberland from 'second growth,' the younger trees that sprout after logging or clearing. It gained wider currency in the later 1900s alongside environmental movements fighting to preserve the last uncut stands of ancient forest, especially in the Pacific Northwest, where the term became shorthand for everything logging would erase: centuries-old trunks, decomposing nurse logs, and the tangled architecture only time can build.