An Eldorado man died after his motorcycle crashed coming to rest in Kettle Moraine Lake. The Fond du Lac County Sheriff’s Office says at 4pm Thursday the motorcycle failed to negotiate a curve on Highway F, slid across the roadway, down the embankment and struck a pier. The motorcycle and the driver came to a rest in Kettle Moraine Lake. The 51 year old motorcycle operator was pronounced dead at the scene. Speed is a contributing factor in the crash.