President Hoover was an engineer before he entered public service. Mrs. Hoover accompanied him all over the world and spent many happy years in mining camps. Both loved the simplicity of camp life and wanted to recreate it at Rapidan. They achieved the relaxing sound of the mountain streams even where none originally existed by asking the Marines to construct Hemlock Run. This sluice diverted water from the Laurel Prong sending it through the camp.