The Los Angeles County Board of Supervisors is expected to approve a plan today to turn the Puente Hills Landfill—the largest municipal dump in the US, when it was active—into an enormous park, reports KPCC. Supervisors are expected to OK spending $5 million to build a visitor center at the foot of the landfill and to greenlight a master plan "that will eventually result in a park on the 117 acres at the peak of Puente Hills."

The landfill, located near where the 60 and 605 freeways meet, spans about one square mile and includes a "trash hill" that’s 500 feet tall. It’s been out-of-service for three years now.