A thin veneer of lightweight, synthetic sandstone was applied to new concrete-block retaining walls. “Even my neighbor, a stickler for historical detail, didn’t detect that it was artificial ...

Question: I have a foot-high Indiana sandstone retaining wall on part of my lawn. How can I remove the algae on it without harming the grass? How can I treat the stone to prevent future algae ...

Arenaerpeton supinatus almost ended up forgotten inside a retaining wall. In what is now legend ... had luckily taken a closer look at a slab of sandstone he'd bought for a backyard renovation.