Volcanic rocks are generally finely crystalline or glassy igneous rocks, resulting from volcanic action at or near the earth’s surface, usually extruded as lava. Most volcanic rocks used in landscaping are very porous and may have secondary weathering and moss growth.

The following selections represent our most popular volcanic rock, however, it is only a small representation of the products offered by Arbor Rock. If you do not see what you are looking for, please visit our contact us page.