Eine Nonne sitzt in einer Kirche am Altar 

This drawing by Dutch artist Ferdinand Bol, known for his portraits and genre paintings, depicts a nun in a church setting. Executed with brown ink and wash, the drawing utilizes a muted palette to create a sense of the interior's dim lighting. The composition highlights the architectural details of the church, focusing on the vaulted ceilings and intricate columns. The nun, rendered with a delicate touch, sits at the altar, adding a sense of spirituality and devotion to the scene.