EUROVOLC Trans-national and Virtual Accesses aim to offer an unpreceded wide portfolio of access managed by worldwide, top-level research teams to the volcanological community. EUROVOLC organizes the access to the EU volcanoes in Italy, Iceland, French overseas territories, and Portugal. The strategic interchange of EUROVOLC with EPOS will allow the project community to access the EPOS-IP Volcano Observatory Thematic Core Service (VO-TCS) benefiting of the service resources; though at the same time will enrich VO-TCS with the new data and products coming from EUROVOLC outcomes. EUROVOLC accesses will offer the opportunity to investigate natural phenomena from field observations to interpretation of processes, and their modelling and stochastic prediction. Hence the foreseen TAs and VAs cover more than one of the transversal themes proposed by EUROVOLC.