 To its east, the Allt Drùidh flows northeastwards out of the Lairig Ghru.At their confluence in Rothiemurchus Forest some 4 miles (6 km) southeast of Aviemore, the Druie is born.Their combined waters flow as the River Druie beneath the Cairngorm Club Footbridge and on to meet the waters of the River Luineag immediately above the bridge carrying the B970 road over the river at Coylumbridge.