Underneath the streets and homes of Trempealeau, beneath layers of sediment built up over hundreds of years, the remnants of an ancient civilization lay dormant, waiting to be found. Archeologists Robert “Ernie” Boszhardt and Danielle Benden have been spending the last decade combing the Wisconsin bluffs for evidence of a Mississippian city tracing back 1,000 years, and next Wednesday, the two will share their most recent findings at a public event.