WGS84 System coordinates are:
N 45° 42.63' E 13° 45.76'
From Venice/Udine, after paying the toll exiting the A4 motorway at the ‘Trieste Lisert’ final toll station, continue on the same road towards Trieste for about 20 minutes until you reach the SGONICO exit. (Venice - 150 Km; Marco Polo Airport - 142 Km; Udine - 67 Km; Ronchi dei Legionari Airport - 32 Km). Then follow directions to Grotta Gigante (tourist sign) and OGS.
From Trieste/Ljubljana, through motorway to VENICE (Ljubljana - 100 Km, Brnik Airport - 115 Km), until you reach the PROSECCO exit; after approximately 100 meters you will reach a crossroad (by the Centro Lanza), turn left and then left again, following directions to Grotta Gigante (tourist sing) and OGS.
From the center of Trieste, enter the state road direction Opicina (Via Fabio Severo - Università - Strada Nuova per Opicina - SS14 - SS58), when on the Karst Plateau turn left at the first round-about towards VENICE (SS 202), go ahead for approximately 5 Km; at the first crossroad (by the Centro Lanza) turn left and then again left, following directions to Grotta Gigante (tourist sign) and OGS.
BY PUBLIC TRANSPORT
Bus n. 42 (Trieste, piazza Oberdan - Opicina) at bus-stop Borgo Grotta Gigante; warning: please verify timetable on website www.triestetrasporti.it, Not all bus journeys pass through Borgo Grotta Gigante
By train: after reaching the Trieste train Station (Trieste Centrale) catch BUS 42 (end of the line piazza Oberdan, 800 metres away from the station); alternatively by BUS 4 (cend of the line piazza Oberdan) to Opicina and ahead for approximately 4 Km by BUS 42 or by taxy.