The physics behind a pendulum resemble similar motions created by water. A ship in rough weather depicts a pendulum in an open space. This is the reason for my recent exploration into pendulums. 

​

Depicted below are cobblestones from the surrounding cities of Groningen, Netherlands. They have specific textures from walking that took place as they were in the ground. During construction, I took some and observed them. By using light, the textures are shown more obviously. 

​

While the pendulum moves, a person is walking above the surface of the rock, insinuating that it's still a walkable surface. The stone moves at a slow pace, back and forth, simulating a persons step.