I just bought a house that has a partial slab / partial earth basement. the basement is divided in 3 with a partial wall dividing the earth from the slab, and a full height wall cutting the slab in two kind of making a T with the earth above the top of the T. on the right side of the T at the top, a previous owner built a decent work bench on top of the partial wall and it extends over the earth part. I know that the left side of the earth part leaks water when it rains heavily. So I was concerned about moisture on the work bench side because I want to set up my leather shop there. The previous owner built a peg board wall from the top of the work bench to the floor joist above. I pulled this all down to rebuild it better and to add a plastic moisture barrier behind the wall and under the work bench so protect my leather and leather tools from potential moisture from the earth side. Well, when I tore down the peg board wall I went in the earth area (that I could not access from the left side because of ducting for my HVAC system, but it is not enclosed and does not need venting) and laid plastic over the earth, and while I was in there I found two holes at the bottom of the foundation at different heights, the bottom of the foundation in this area steps up to the end of the house. I have no clue if these were put there when the place was built in 1945, or if this is something that has happened since or what... I want them closed up, but have no clue what to do, use or whatever. I will attempt to include pic I took with my phone while I was in there. Any and all help and advice is greatly appreciated.