The inland dune is the second line of defense and is as vulnerable as the primary dune. It too is intolerant and should not be developed. The backdune. However, reveals a more permissive location and this is perhaps the most suitable environment on the sand bar for man. Normally this supports woody vegetation—red cedar and pine. The shade of these tree is a welcome relief from the blinding light, glare and heat that characterize the other zones. Fresh water is more abundant in this environment than any other—an important consideration for development.