On September 2, 1916, along the coast of the Gulf of Trieste artillery and mine-throwing engagements continued in various sectors with intermittent violence. Fighting also spread to the Plava sector. On the Ploecken sector the Italians after a very violent artillery fire attacked unsuccessfully on a small front. Several attempts made by minor Italian detachments to advance on the Tyrol front were repulsed. Two attacks on Civaron failed. On the Trentino front Austrian artillery activity continued. Villages of the Astico Valley and the Italian positions on Cauriol in the Avisio Valley in particular were shelled. On the northern slopes of Cauriol Italian Alpine troops engaged the Austrians, inflicting considerable losses. In the hilly area east of Goritz some detachments of Italian infantry pierced two wire entanglements and bombed the Austrian lines, causing supports to be rushed up. These were effectively shelled by batteries. At the head of the Rio Felizon Valley, in the upper Bovi, during the night of September 3, 1916, detachments of infantry, Alpini, and volunteers succeeded by a daring surprise attack in capturing several commanding positions on the Punta del Forane. A violent Austrian counterattack was decisively repulsed. On September 4, 1916, the usual artillery activity took place on the Trentino front. The Austrian artillery fire was especially intense against Italian positions on Mount Civaron in the Sugana Valley, and on Mount Cauriol in the Fiemme Valley. A more violent attack was attempted by the Austrians on the evening of September 6, 1916, against the Italian lines on Monte Civarone in the Sugana Valley. After brisk fighting the Austrians had to withdraw, abandoning their arms and ammunition and leaving some dead on the ground. In the Vallarsa, Adige Valley, on the evening of September 7, 1916, strong Austrian detachments after an intense bombardment attacked Italian positions between Monte Spil and Monte Corno. They succeeded in breaking through some trenches. A counterattack recaptured for the Italians the greater part of the ground lost. On September 8, 1916, in the Tofana zone Italian troops repulsed an attack against the position in the Travenanzes Valley which their troops had taken on September 7, 1916. On the Trentino front the activity of the artillery was more pronounced on September 9, 1916. Unimportant attacks on Italian positions on Malga Sugna, in the Vallarsa, on the Asiago Plateau, and on Monte Cauriol and Avisio, were repulsed. At Dolje, in the Tolmino sector, after preparation with hand grenades, the Austrians attempted to break through the Italian line, but were driven back immediately. On the next day, September 10, 1916, between the Adige and Astico Valleys the Italians developed increased activity. Austrian hill positions in this sector were subjected to strong artillery and mine fire. On the Monte Spil-Monte Testo sector the advance of several Italian battalions was repulsed.