The hike we did at this park was perfect. It was short enough, but not too short, for all the kids. It also followed a beautiful lush forest which led to to an enormous rock, hence the name Echo Rock Trail. After the rock the trail does open up to Mirror Lake.
The ranger at the visitors center was fantastic, not only about information on Mirror Lake SP but about other parks in the area too. She gave each of the kids a booklet, broken down by age, of information along with questions to complete on our hike. When we returned the completed booklets to the visitors center each child received a patch. This patch program is something that can be done at many of the state parks in Wisconsin. My kids loved it, especially Makenzie and Koah who still refer to some of the things they learned through the book that day.