Digital humanitarians represent the current generation of volunteers providing timely contributions in the form
of digital map data in the aftermath of natural disasters. Starting from the tragic 2010 earthquake in Haiti and
thanks to the success of the OpenStreetMap (OSM) project, the presence and coordination of these volunteers
have grown incredibly over the past years. This work investigates the dynamics of the mapping process and the
nature of the OSM volunteers who contributed map data after the 2016 earthquake in Central Italy. The analyses
show that the existing OSM users were the majority of those contributing to the mapping activity, with less edits
performed by new users. The collaborative mapping process was efficiently coordinated through a dedicated
platform and the area hit by the earthquake was significantly edited in OSM after the disaster