The A3 winds through sweeping pastoral country on its way south. At Moneague, the road meets up with the A1 from St Ann’s Bay, and continues up the pine-forested slopes of Mt Diablo (839m). At 686m the A1 crests the mountain chain and begins its steep, winding descent to Ewarton and the lush Rosser Valley, beautiful when seen from these heights.
Until the opening of the toll highway from Kingston, this road was the main route from the capital to the north coast. It's much quieter now, though some minibuses and trucks still tear around the mountain bends to avoid the tolls.