By Brooke Younger Irina88w/Getty Images Video Muted The main purpose of a retaining wall is to prevent erosion, but what's the biggest cause of erosion?
Brooke Younger is a Freelance Writer at Hunker and Yahoo News. She specializes in architecture and planning, focusing on home and garden, house design, and interior design. Brooke's work is featured in Hunker and Yahoo News.














