In May 2012, ""The Monument to the Ice Age"" was dedicated in the town square. It features descriptions of Ice Age times, continental glaciers, and Sioux Quartzite glacial erratics -the oldest rocks in Kansas. The main reason for this Ice Age Monument is that Blue Rapids was founded in a place with abundant natural resources brought or created by the glaciers of the Ice Age over 10,000 years ago. The namesake rapids on the Blue River that were harnessed to power early industries, the sand and gravel deposits used for construction and roads, and the rich soils for agriculture are all here because of the Ice Age glaciers. The Monument honors this ancient geological heritage. Glacial erratic that was deposited in the glaciated region of Kansas during the Pleistocene era.