In all the rooms, speakers hidden in artificial rocks broadcast the sounds of frogs and birds.

The store has its own 47-foot-tall artificial rock and an outdoor dirt trail for testing bikes.

Archaeologists, during 1998, reported that artificial rock was made in ancient Mesopotamia.

I think the tigress and the lion mounted on artificial rocks are especially fine.

Pools with artificial rocks made by coloring, carving and sealing concrete.

The specimens are usually mounted on an artificial blue-grey rock with surrounding foliage.

But the pool is twice as big as it used to be, and features artificial rocks designed to portray a California-coast-like environment.

Today the forts are used primarily as artificial rocks for sunbathers in the summer.

A route setter is a person who designs artificial rock climbing wall routes.

Concrete can be viewed as a form of artificial sedimentary rock.