Want to leave no trace behind? Or even better, erase the marks of others? Join us for one of our clean-up events. We supply everything you need for this activity, including gloves and a snack. The event lasts about 2 hours. Dress appropriately for the weather, including closed shoes (not sandals), and your reusable water bottle. Feel free to contact us if you have any questions: opnet360@grame.org. See you in the field!