Chiseling away at the wall with the ripper & bucket, making pretty good headway by finding some soft spots near the cement foundation vs outer part of the wall that is rock hard! I've got an idea in my head to make a rock saw!
The power of this brute just continues to awe me, the boulders that the ripper tooth will pull up from an inch or two below the surface.
Pics before I started.
Two 5000mAh lipo packs later.
http://www.youtube.com/watch?v=EVHxFbfJs7Y