Dumb question. How are the dunes actually formed? It seems if they were formed by the light sand blowing and depositing on the existing dunes, Mother Nature could take a long time to replenish the dunes. I understand the concern about visitors trampling on the dunes; but didn't building homes right on top of dunes cause a lot of damage? I have seen some gulf front homes being built on top of dunes with little care for the dunes during the construction. I feel for the gulf front owners who are going to loose their homes. As the Pensacola City Manager said on CNN "Mother Nature is a mother".