Another vote for the Huntington/Foxfire KOA (in Milton). We have stayed there many times....excellent CG with extremely nice owners. The CG is less than a half hour from Charleston, and is also just a few minutes from the Barboursville/Huntington Mall area (plenty of shopping, restaurants, etc..)
BTW, we have also stayed at Rippling Waters CG, and had a very nice stay there. The lake and chapel are beautiful. We stayed in the row of paved, back-in sites by the shower house while there.
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