Bounce houses, cheery red tractors, melting ice cream cones, live music, a petting zoo – Veterans Memorial Park was full to the brim with families celebrating the annual Black Earth Field Days festival in early August. But one corner of the lively park hosted a very different celebration, led by Steve Solberg, a renowned earthworks surveyor and researcher, and Ritchie Brown, a Ho-Chunk elder, surveyor and former natural resources manager for the Ho-Chunk nation.