It’s easy! On every campground page, you’ll see an "Add Review" button under the star rating and campground name. This is the same in app as well as on the website.
Please make sure your review is full of good information about the campground and add photos if possible. We want this to be a reflection of what the campground has to offer to others. Personal experience is extremely important as well, but please keep in mind that this review is about the campground when you add your content.
Check out this article to learn what components we consider useful in campground reviews.