Earth Day Celebration Saturday, April 22, 10:00am-12:00pm All ages are welcome! FREE ! Celebrate Earth Day by helping us restore the park! Join a team of rangers and volunteers to remove invasive plants, pick up trash, work on trails, and plant some native plants. This program meets at the Nature Center at Lake Roland 1000 Lakeside Drive Baltimore, MD 21210. Registration is required, please contact us via email at firstname.lastname@example.org.