The Spruce on MSN1y
26 Retaining Wall Ideas Perfect for Sloped Backyards
This small rustic boulder retaining wall from Amy Leferink of Interior Impressions helps to integrate the two-story home into ...
Nature5d
The Hoover (Boulder) Dam
THE completion, just announced, of the great concrete structure originally known as the Boulder Dam ... and will be the retaining wall of a reservoir having a length of 115 miles and a total ...