Martin City ParkOn First Avenue. Donation box. Small park with gravel lot. Outlets are 110v household size. Horseshoes, barbecue pits, covered picnic area; playground. Enough space for 4 RVs. State: South Dakota City: Rapid City Nearest Town: Martin Status; Official Cost: Free Nearest Road: Paved Scenery Rating: 2 Months Opened: RV Season Extras: None Number of Camp Sites: 10 or less Max Stay : Unknown -