Hello. We are planning to build an earth sheltered house in central New York. It will be built into a south facing hill. We are unsure about what material to use for the walls. We would prefer to use the parged concrete block system because it is easier and cheaper and owner/builder friendly. However, we are concerned that this will not be strong enough to resist the pressures of the earth. The other option is poured concrete walls. We are not comfortable pouring the walls ourselves and fear that it will cost too much to hire out. This will be a mortgage free house and we will be watching very closely where every dollar goes. So, the questions are: Will the dry stack block system work? What can be done to this system to make it work? How much does it cost to hire out the poured walls? Can you give any other advice? Thanks and good day.