Shown in this image is a typical campground for tourists traveling by car. Clearly visible are various kinds of tents that have been unpacked and erected on the ground near the owner’s car.
The description states:
MICHIGAN – WATER-WINTER WONDERLAND
Camping is fun in Michigan. Excellent campgrounds with facilities for tents and trailers are available all over the state. Visit Michigan
–The text is vague and indicates the intent was to encourage tourism by promoting the common availability of campgrounds such as this. This postcard is likely from the 1960s.