I need help identifying this taproot

I'm working on an organic herb farm in Northwest Montana and today as we were weeding paths in our mandala I discovered several large root masses in an area that's only ever had chamomile growing in it for the three years I've worked with it. It was buried down quite a ways but starting to sprout (today is April 29). It has a massive and we'll developed root system for something we've never seen grow. What I'm wondering is just what it is? Please help, I'm going to attempt loading a picture, but this is my first posting on permies so we'll see.

Considering it is the Northwest, I really want to hazard a guess and say blackberry, or something related to it.

My guess is Elecampane... but I'm definitely not sure about it. The early growth looks very similar to the elecampane I have growing. If it is elecampane, the root can be used medicinally. https://www.thespruce.com/grow-and-use-elecampane-1762291

Good luck and hope that helps!

Christopher, you got the ID correct, good eye.

The root is the valuable part of this plant as a medicinal, it is best to dry the root then cut into small cubes and dry some more for long term storage.
It has several uses and just a few years ago it was found to also be a good cleanser for chemo patients when brewed into a tea.

Redhawk