old growth
virgin forest

The trees were larger, and the forest seemed of older growth than below.

The tract of old growth was purchased by the federal government in 1936.

It was just a symbol, you see, for the larger issue of saving the old growth.

The sun hung well above the forest before they reached the area outside the old growth.

Don't use the older growth that has brown or gray bark.

In among the old growth and secondary forest it is easy to see why.

The old growth had been cut away to make room for houses.

The meadows passed away with the sweep of the sun west, and they reached the old growth.

Hemlocks, for example, can live 600 years, so a 300-year-old stand of trees would be considered old growth.

"In 10 to 15 years, there will be no old growth left except for isolated patches," he said.