Elk Mountain School Address: 10169 Elk Mountain Rd, Edgemont, SD 57735 Phone: (605) 749-2227 Schools Other Businesses: Rocky Mountain Pipeline at Mule Creek Jct W, Edgemont, SD 57735 Boos, Carole J at 310 2nd Ave, Edgemont, SD 57735 Inter Motel Leasing at 104 N 6 Ave, Edgemont, SD 57735