The Sunderland sycamore I doubt would be a "go" for rec-climbing, but might be worth a shot. haha.
I drive by it every day on my way to work, tree definitely needs some rehab, tons of broken cables, and some huge deadwood stubs and large hangers over the roadway, wish the town would spend some money on it. Last I knew the tree was roughly 25' CBH, 110' tall, and has something like a 120' spread on it. By the way, thats not me! I'm well over 3 and a half feet tall!
It was only second to the "Hatfield Sycamore" in the next town over, until last year a big (roughly 3ft diameter?) lead peeled off it and landed next to the road. They resistographed it, and found this also 26' circumference tree to have not much more than 5-6" of wood at the base, the rest was completely hollow.....
This also isnt me, just some shmuck high school summer help.
I worked for a customer who actually got the second cut of trunk up from the stump cut, and had it made into a playhouse for his kids, very cool! And of course I took pictures!