This Lexington, Mass. propery has about a 20 grade variation from the street to the garage doors. It is all hill. When we were called in, there were little knee walls all through the landscape. We consolidated two shorter walls in this small space and engineered a longer more substantial wall to open up the landscape. We widened the driveway and created a functional lawn space (the only flat surface other than the deck and play set area on the whole property).