Vacation rentals in Cascade Springs

I want to make sure I’m accurate. Cascade Springs, South Dakota isn’t a widely documented city, so I’m not certain which place you mean. Could you confirm whether you mean Cascade, SD (a small town), a natural area known as Cascade Springs near Rapid City/Black Hills, or another location? Once confirmed, I’ll write a precise 2–3 sentence blurb. If you’d like, I can also provide a generic South Dakota vacation-rental blurb in the meantime.