About 40 volunteers gathered Saturday morning at NOVA’s Reston Center to map food resources in their communities. The Map-a-Thon was hosted by NOVA’s student ASPRS (remote sensing) chapter. Partners in the effort were Mason’s ASPRS chapter, MappingDC, Open Street Map, and MapGive. Mappers used Open Street Map to plot and tag farmers markets (and vendors) in their communities. The event was open to the public and supported the Geography Awareness Week theme of food security.