Trees and rocks 

Franz Kobell's "Trees and Rocks," a delicate pen and ink drawing, showcases the artist's mastery of capturing the natural world. The artwork features a variety of trees and foliage, rendered with meticulous detail, set against a rocky outcrop. Kobell, a German artist known for his landscapes, expertly depicts light and shadow through subtle lines and shading. The serene scene evokes a sense of tranquility and invites viewers to appreciate the beauty of the natural world. "Trees and Rocks" is a prime example of Kobell's artistic talent and the enduring power of landscape art.