The 175- to 200-year-old tree is part of an old-growth forest on the slopes of Big Ivy, part of the Pisgah National Forest.
(The 175- to 200-year-old tree; is; part of an old-growth forest on the slopes of Big Ivy) (Forest; [is] National [of]; Pisgah)
The 175- to 200-year-old tree Forest
is [is] National [of]
part of an old-growth forest on the slopes of Big Ivy
Pisgah