Dave's Trains and Trees first attempt to model redwood trees on a diorama. The owner of the Sonoma Mountain Railroad layout provided this 20" by 20" base that included handcrafted rocks, track, and the retaining wall. The ground cover under the redwoods is all natural materials/debris swept up in my driveway under real redwoods, then filtered. Green brush is Woodland Scenics Fine Leaf Foilage.