Got a job where I need to build a retaining wall on a severe slope,starting at the front of the house to the backyard where there is about a 8-10 ft foot drop over about 50 ft of length.I have done walls on slopes before but not one this steep or even close. I am going to step the wall about every 10 ft or so to avoid a high wall at the bottom of the grade,where it should only be about 4 ft high.Probably about a 45 degree slope overall (guesstimate) Usually I will dig out the base perfectly level to the lowest grade and build up,but in this situation that would require me going WAY deep and possibly running into a sewer line and other stuff near the highest part by the front.I would literally need to dig down 10 ft and that's just not really practical and a lot of the block would be covered so that doesn't make much sense. Could I do it? Yeah I could but that is going to require a massive amount of digging to get the high part of the grade with the lowest and get it level.Looking for other options, I don't like digging near plumbing or electrical and both are close by. My question is can I step the base grade (soil) just like I would the blocks and at the same point,and maybe put a cinderblock every 10 feet at the breaks to make sure the soil doesn't shift under it.Obviously I would secure the cinderblock with some rebar or something to make sure it doesn't move underneath and backfill on top.