Blocks of low density EPS foam are used to create everything from “stone” furniture to swimming pool grottos, privacy walls and theatrical sets. Large structures are strong and lightweight and, depending upon the skill of the creator, can be very realistic. These examples show a variety of projects ranging from small home made tables to structural rock formations. For anyone wanting a grotto or other large structure but lacking the skill, we have a contractor/customer that travels throughout the United States creating one of a kind formations.