Ocean City, MD - Dirt and sand floor on a crawlspace gets sealed up from the elements

In these pictures you can see the open foundation vent is sealed (not just closed). Even when you close a vent, it still leaks air like a sieve. Also you can see the CleanSpace vapor barrier covers the crawlspace walls and floor. DryZone has a policy of leaving the top 4 inches exposed to allow for a termite inspection. Very clean, very dry, very healthy crawlspace.