Look into Lake George, which extends across the line just west of I-69. There is a large RV resort, Lake George Escape, and an Indiana SP, Pokagon, in the area.
In rvparkreviews, look at both Angola, Indiana, and Coldwater, Michigan. Angola is a bit closer to the state line.
Not to be confused with Lake George, Michigan, which is much further north in the center of the state.
Tom Test
Itasca Spirit 29B