People took advantage of the cobble exposed by the Anacostia River for handy tools just as people do today. A common tool needed was a hammer stone. The image to the right is another stone used for crushing, or pounding found in the park.
Did You Know?
The top of the lotus leaf is covered with wax pebbles, making it better at shedding water than a plain wax surface. This surface is being copied for rain ware. More...