These rocks are bulging out of a flat surface. They are all different size and and shapes which creates a really interesting feeling. The flat surface herself is rough and the rocks are smooth.
The etchings on this wood are going in different directions and are on different bumps. Some of the bumps are overlapping and others are separated completely. All of them are smooth and shaped in different ways.
The rug is my my favorite. All boxes stand out enough that they can be pushed side to side. Each side is soft and give or take equal. They usually follow the same direction.