I had to build a steel retaining wall big enough to hold 30,000 gallons of water. So why not make it look modern and cool? This video outlines the build of the retaining wall. Follow up video with the 30,000 gallon rain tank is coming soon. I managed to build this project in my free time. I work a full time job that keeps me busy. If you want to see me post more videos of equal or better quality, please like, subscribe and share. If it is clear that this video adds value to the world I will do everything I can to make more quickly. But I need your help getting this video out there.