As the date of composition of The Garden of Earthly Delights cannot be determined accurately beyond the range of 1490 to 1510, it is a matter of conjecture as to whether the drawing of The Tree-Man is a preparatory sketch or a later variation on this most memorable, nightmarish character.
Although not situated in hell, the landscape of The Tree-Man is nevertheless rather bleak and blighted. In the centre of the foreground a stunted tree sits near the bank of a river that has inundated a large part of the background land. Various species of birds feature, including a stock, a pair of swimming ducks and an owl.
Dominating the scene is the Tree-Man, a monstrous hybrid of human face, rotting tree stumps, broken eggshell and boats. Inside the hollow cavity of the body a group of people (surely damned) appear to be involved in drinking, gambling and whoring. Also a crescent moon flag juts from this unusual posterior opening. The Tree-Man sports extraordinary headgear on which a large pitcher is balanced. Inside this vessel is a small blurry figure that is pointlessly dangling a fishing line and another man precariously clings onto a ladder while reaching out to a line that is attached to the flag.
It has been suggested that the Tree-Man’s face in both this drawing and in The Garden of Earthly Delights is a possible self-portrait of Bosch. In the triptych the headgear closely resembles an artist’s palette and the sideways, conspiratorial expression of rueful resignation that greet the viewer do point towards the Tree-Man being an elaborate, knowingly ironic signature.