On 16th of November, the chair of Cartography and Cartography M.Sc. alumni Sigita Grinfelde supported OSMGEOWEEK by organizing a mapping event. More than 20 students from the international Master programme of Cartography and the study programme of Geodesy and Geoinformation joined this event. After a talk of Dr. Nina Poulos about ‘Envisioning Digital Earth through power of "WE"’, the Cartography community helped mapping cities near Mount Sinabung in OpenStreetMap using the HOT Tasking Manager. Mount Sinabung is an active volcano in Indonesia that poses significant risk to people living in close proximity. Within the OSM GeoWeek students traced buildings, roads and water features to increase the preparedness for volcanic events. Within the OSMGEOWEEK, teachers, students, community groups and map lovers around the world, join together to celebrate geography and make maps with OpenStreetMap, the free and openly editable map of the world.