Volunteers (14+ yrs) are needed to help preserve and restore Philadelphia‘s open space. Join the Cobbs Creek Ambassadors for outdoor volunteer experiences on the Saturdays and Sundays of every month! Projects will rotate along Cobbs Creek Pkwy - from Woodland Ave to Market St. . We bring the tools, gloves, and expertise. You bring the energy! If you are bringing a group have them register here. We can handle groups up to 25 on a first come first served basis.