Depending on their surroundings, some trees grow abnormally, with their trunk and branches conforming to nearby debris or blockages.

Former jeweler Peter “Pook” Cook has perfected a process to replicate this himself and actually “sculpt” growing trees into specific formations. Cook began doing this in the late 80s, inspired by fig trees growing on a cliff face. It took him years to refine the method, but the Australian now turns trees into unnatural but indeniably cool shapes, including eerie, human-like figures.

Cook takes requests for sculptures and will even assist in growing them on customers’ property. If the tree people are too creepy for your backyard, he also designs chairs, mirror frames and abstract shapes.

Check out some of Cook’s designs below:

[via BoingBoing]