the piles sit on the rock, then you create a concrete slab which provides for a stable surface that spreads weight load out over a large area, and you build. i liked it and ordered another bottle. just like the article mentioned in the beginning, a lot of parents take their kids to the dentist twice a year whereas by no means going themselves, or going less often. we are bound for domestic terminal 1. we will not be making any stops at the international terminal, so please take care. 