(DC) (Rock Creek Park) Join Rock Creek Conservancy and the National Park Service for this invasive plant removal restoration event in Rock Creek Park. Invasive plants are a major threat to our fragile forests, and stopping their spread helps allow for a thriving native understory. Event location, directions, and information will be sent from the event leader 48 hours prior to the event. Trail 9 is near the intersection of Broad Branch Road and Beach Drive NW for planning purposes.