If Mr. Kamp has his way, that natural landscape will be as undisturbed as possible. ''Some people will say, 'Well, it looks like you didn't do anything,' '' he said. ''But I think we should celebrate the fact that we are out on the Cape.'' Mr. Kamp's firm, Dirtworks Inc., is one of the few in the country specializing in gardens for people with AIDS, Alzheimer's or other illnesses.