Getting ready for the concrete foundation

It is almost time for the concrete foundation to be poured. However, before that can happen the house is raised with dirt and covered with a vapor barrier. In the pictures there are some portions that appear to indent into the ground. These indents appear around the outside of the house and there are some along the master bedroom, office and laundry room area. This represents the load bearing walls. Because these areas will be holding up the weight of the house, more concrete is required here than other parts.