
1) American contemporary art
Found on
https://www.crosswordclues.com/clue/old-growth

Forests that have never been logged or have not been logged for many decades; characterized by a large percentage of mature trees.
Found on
http://www.americantrails.org/

Timber stands with the following characteristics: large mature and over-mature trees in the overstory, snags, dead and decaying logs on the ground, and a multi-layered canopy with trees of several age classes. ... (05 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973

A forest stand near or at its peak of development, including trees of great age, pit and mound topography, an abundance of down and standing dead wood, and limited or no evidence of human influences, such as stumps, logging roads, or other man-made distur
Found on
http://www.neonaturalist.com/nature/nature_glossary.html

[
n] - forest or woodland having a mature or overly mature ecosystem more or less uninfluenced by human activity
Found on
http://www.webdictionary.co.uk/definition.php?query=old%20growth
virgin forest noun forest or woodland having a mature or overly mature ecosystem more or less uninfluenced by human activity
Found on
https://www.encyclo.co.uk/local/20974

Older (and typically bigger) local vegetation. Cedars, sequoias and other trees with long lifespans are often called old growth.
Found on
https://www.eurekacamping.com/blog/article/20-camping-terms-you-should-know
No exact match found.