Water Power !!!
Historiical trivia for those who are interested -- July 24, the date that I placed this cache, is an important anniversary date in the history of water power. On July 24, 1880 the first commercial hydroelectric power plant in the world began to generate electricity. This was in Grand Rapids, Michigan.
Pbhag 5 sebz bar raq, 9 sebz gur bgure, gura ybbx gb gur bccbfvgr fvqr.