Work in progress

A quick look at a drawing in progress: this is the first piece of a four-part drawing (the correct, yet rather unwieldy, art term is polyptych).  It is not completely finished - I will not resolve all of the values until all four drawings are complete and I can see them spread out together. Graphite on paper, 18 x 18 inches, the working title is Snowblind:

and the detail: