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Oregon Caves Douglas Fir, OR

PostPosted: Tue Jan 08, 2013 9:24 am
by mdvaden
The photos I put in the CA section about the big Douglas firs in the redwoods, reminded me of this old Doug fir in Oregon.

It's basically where the Oregon Caves are, near Cave Junction, Oregon. Same road and parking, then a brief distance up a trail. The scenery is rather nice there. The caves are a decent tour too.

Re: Oregon Caves Douglas Fir, OR

PostPosted: Mon Feb 18, 2013 12:16 pm
by tomhoward
That is a fantastic tree, and a tree I knew well years ago, when I worked as a cave guide at Oregon Caves. It is called Big Tree, an appropriate name. When I was out there, a sign by the tree said it was 1200-1500 years old, and 182 ft. tall - these figures are almost certainly exaggerations, as few Douglas-firs are known to be that old. According to Oregon Caves Forest and Fire History by James Agee, Laura Potash, Michael Gracz (National Park Service Cooperative Park Studies Unit Cooperative Report CPSU/UW 90-1, 1990), a book I downloaded through Google Scholar, Big Tree is most likely about 600 years old, a more reasonable age. As far as I know, no tree heights have been measured with the NTS sine method at Oregon Caves, and Big Tree never seemed to be as much as 182 ft. tall. In Agee's 1990 book, maximum heights are Douglas-fir - 42 m. (137.8 ft.), White Fir - 38 m. (124.6 ft.), Sugar Pine - 51 m. (167.3 ft.), Ponderosa Pine - 49 m. (160.7 ft.) - these height seem reasonable, even if the method used was the inaccurate tangent method - I don't know what method was used. Agee gives the ages of most of the old growth Douglas-fir at Oregon Caves as 240- up to 300 years, and this also is reasonable. I remember counting 300 rings on the stump of an average sized Douglas-fir in the old growth forest there.

Tom Howard

Re: Oregon Caves Douglas Fir, OR

PostPosted: Fri Feb 24, 2017 1:41 pm
by oxman

Re: Oregon Caves Douglas Fir, OR

PostPosted: Sun Feb 26, 2017 10:41 pm
by mdvaden


Did you happen to wrap the girth going up there to gain some measurements from the effort?

I recall a video of some guys climbing the Trees of Mystery redwood to check height, and it was a surprise no girth measuring for volume was ever done on such a large tree as long as they were up there anyway.

Re: Oregon Caves Douglas Fir, OR

PostPosted: Tue Mar 14, 2017 3:37 pm
by oxman
Jerry Beranek & I did a recreational tree climb of the Oregon Caves Fir. Here's his video of the climb:
https://youtu.be/3qM_OIffuaM

Re: Oregon Caves Douglas Fir, OR

PostPosted: Wed Mar 15, 2017 1:40 pm
by Don
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