when i see patio or a front porch or a landing thats raised or something along those lines whats on the inside. what I'm trying to get at is.. are the pavers/stone laying on a concret base and just adhered to the top of it. Or is it back filled with compacted dirt and leveled. or is there something that I'm missing. Just had to ask, like i said its probably a stupid question, just had it on my mind.