There are several places in the Rapid City and Black Hills areas that would be perfect for a simple ceremony.

I have performed ceremonies all over the Black Hills. I'm familiar with most of the gorgeous venues. I also know the joys of simple, intimate ceremonies in beautiful little pull-offs or seldom-used picnic grounds.

A note about outdoor weddings: South Dakota is famous for its sunshine and its storms. It can be summer in November or winter in May! If you decide on an outdoor wedding, make a back-up plan. Will we wait out a storm? Where? Can we reorganize the reception area and move inside? What about wind? (South Dakota is famous for that, too!)
I have added to this email links to several locations in and near Rapid City. I have done weddings at all of these locations.

If you are looking for low or no cost options for the venue, I recommend the Canyon Lake Park Gazebo or the Fireplace Shelter at Canyon Lake Park, Storybook Island Picnic Area are beautiful places and there are either low or no charge to use these facilities. If you are planning a large wedding with many guests and setting up chairs serving food decorating Then I would recommend making  reservations for the Canyon Lake Park Gazebo or Fireplace Shelter or Storybook Island Picnic Areas.

Along Skyline Drive there are several places with pull offs with magnificent views of the city. This is where Dinosaur Park is located.