Opicina, formerly Poggioreale del Carso in Italian, is a town in northeastern Italy, close to the Slovenian border at Fernetti. Opicina i…Opicina, formerly Poggioreale del Carso in Italian, is a town in northeastern Italy, close to the Slovenian border at Fernetti. Opicina is a frazione of the comune of Trieste, the provincial and regional capital. The town has a large Slovene population, with Slovenian being widely used alongside Italian in private and public institutions. The first town near Opicina is Sežana in Slovenia, there is also the next railway station.