Petrified Park Campground Highway 12 Lemmon, SD 57638 Lemmon, SD Campgrounds Llewellyn Johns Memorial Recreation Area Rural Lemmon, SD 57638 Lemmon, SD Recreation Areas Petrified Wood Park Museum 500 Main Street Lemmon, SD 57638 Lemmon, SD Museums Grand River Museum 114 10th Street W Lemmon, SD 57638 Lemmon, SD Museums