How are the replicated rocks manufactured and shipped?
The rugged castings are hollow, approx. one-inch thick, and open at the bottom. They weigh between 80-100 lbs. (but are exact replicas of rocks that weigh 500-1,000 lbs.) and are manufactured from construction-grade GFRC cast stone to withstand freeze-thaw conditions and 9,000 psi (pounds per square inch) of pressure.
