The European Network of Observatories and Research Infrastructures for Volcanology (EUROVOLC) will construct an integrated and harmonized European volcanological community able to fully support, exploit and build-upon existing and emerging national and pan-European research infrastructures, including eInfrastructures of the European Supersite volcanoes. The harmonization includes linking scientists and stakeholders and connecting still isolated volcanological infrastructures located at in situ volcano observatories (VO) and volcanological research institutions (VRIs). EUROVOLC will overcome fragmentation at various levels, including community, project and discipline fragmentation by addressing four main themes: Community building, volcano-atmosphere interaction, sub-surface processes and volcanic crisis preparedness and risk management. Examples of networking activities under these themes include collaboration and networking between VOs, VRIs and civil protection agencies, networking of atmospheric gas and aerosol observations as well as observations of subsurface processes, and initiation of access to multidisciplinary observations from Krafla Volcano Laboratory as a test bed.