an oak tree burl

Walking the circle road we live on, we pass an oak tree with a large "nose" . . . at least that's what the burl looks like. Burls are common in this area --- there's a tree in one of the lake's camping grounds with up to ten of these growths, some on top of others.

I drew this with a Kuretake brush pen filled with Noodler's Lexington gray, a Lamy Safari pen with Platinum Carbon black, a Pentel Pocketbrush pen with black ink, and Pentel Aquash brush pen with light black ink. The whites are a light zinc white gouache wash and a white gelly roll pen.