Spring Green area news. Valley Sentinel is your independent, local news source covering arts & culture, outdoors & recreation, local meetings, events and our larger Lower Wisconsin River Valley community. In times like these, our community needs to come together. So, let’s build community together. Your hometown news. Covering Arena, Lone Rock, Plain, Spring Green and the surrounding areas in Sauk, Iowa and Richland counties. Valley Sentinel — Spring Green, Wisconsin news.