1952 build Maryland house. My wife wants to landscape the area on the south side of our house. We were planning on putting Otto Luyken English Laurel next to the house. Upon digging I notice this irregular, large stone, cementitious "vein" running along the side of the house about 2 feet deep extending (as best I can tell) 2 feet from the house (honestly I don't know if it's attached to the foundation. There is a big oak Tree about 10 ft from this location. I BELIEVE I can get under it, but I'm not 100% sure.
Is this part of the foundation in any way? Would it be safe or recommended (or not) to use a jack hammer or hammer drill to break it up to make more room for the Laurel root system or should we look for an alternative solution?


