Sandstone and limestone tend to be the least expensive ... In fact, flat boulders make good steps. These large landscape rocks are sometimes used to build retaining walls or tiered yards because ...

Natural stone paths look good in almost any landscape. They never go out of ... First, select dense, hard rock like ledge ...

CONNOR: Good thinking! I read a bit about limestone on the bus journey. Limestone is a sedimentary rock created by layers of skeletons and shells of sea creatures found in ancient, warm ...