Size the trench so there's enough room for the retaining wall block and at least 8 in. of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 ...

In a retaining wall, these blocks are stacked together in several courses, and capped off with a concrete capstone at the top. The blocks are hollow, which makes them lightweight and easy enough ...

"I thought there could be an improved frame to assist when leveling an outdoor ground surface when building hardscape retaining walls," said an inventor, from Clearfield, Pa., "so I invented the EASY ...