|Sorry for the less than stellar image quality, it's an iPhone|
I've never seen Liatris growing in the wild before, so this is exciting. I think it looks like a Liatris spicata. Based on the remoteness of the location, high on a ridgeline, deep in a Natural Preserve, miles from civilation, I don't think this is an escaped cultivated specimen. This particular mountain area is one of the few in this area where you won't see any introduced species, it seems quite pristine.
Thank you Jeff for this excellent find!