This is a practice I did while learning the organic geometry generation through the use of volumes in Houdini with the help of the great Saber Jlassi. To make the project a bit more interesting, I created the tool so that an spiral-ish path is attached to the rocky shape. From this path, it generates carved routes and holes, some stairs and a hanging rope.
The project required the creation of a variety of tiny to mid funny HDAs to ensure flexibility and scalability along the streamline.
Everything is procedural, no hand tweaking for anything so that an infinite variety of shapes and looks can be achieved!
After finishing the tool, I rendered only two shapes, though. A new project grabbed my attention ;)