Klazina Vander Sanden Jul 1, 2014 | Obituaries Klazina Vander Sanden 88 Rock Valley June 24, 2014 Klazina Vander Sanden, 88, of Rock Valley passed away Tuesday, June 24, 2014 at Whispering Heights. This content is for Sioux County Index Online Subscription and Back to School Special members only.Register Already a member? Log in here