INGV reported that eruptive activity was recorded at Etna’s Bocca Nuova Crater, Southeast Crater, and Voragine Crater during the month of June. Gas emissions at Bocca Nuova Crater were variable and sometimes high-temperature pulses were visible as incandescent flashes at night. Occasional emissions of red ash were visible but quickly dissipated. At Southeast Crater fumarolic gas emissions rose from the E part of the cone and from the 2 April pit crater on the N crater rim. Diffuse ash emissions from the E vent were visible during 6-9 June. At Voragine Crater weak Strombolian activity began during 13-14 June at a vent located at the southern inner wall of a cinder cone formed during 2019-2021 activity. Initially explosions occurred about every 10 minutes and built small hornitos. Over a period of days, the material accumulated and formed a small scoria cone; Strombolian activity at two vents began to intensify on 26 June. The new cinder cone reached about 20 m high during 27-30 June. On 29 June lava from the SE side of the cone flowed into Bocca Nuova Crater and on 1 July a lava flow effused from a vent on the NW flank.

Geological Summary. Mount Etna, towering above Catania on the island of Sicily, has one of the world's longest documented records of volcanism, dating back to 1500 BCE. Historical lava flows of basaltic composition cover much of the surface of this massive volcano, whose edifice is the highest and most voluminous in Italy. The Mongibello stratovolcano, truncated by several small calderas, was constructed during the late Pleistocene and Holocene over an older shield volcano. The most prominent morphological feature of Etna is the Valle del Bove, a 5 x 10 km caldera open to the east. Two styles of eruptive activity typically occur, sometimes simultaneously. Persistent explosive eruptions, sometimes with minor lava emissions, take place from one or more summit craters. Flank vents, typically with higher effusion rates, are less frequently active and originate from fissures that open progressively downward from near the summit (usually accompanied by Strombolian eruptions at the upper end). Cinder cones are commonly constructed over the vents of lower-flank lava flows. Lava flows extend to the foot of the volcano on all sides and have reached the sea over a broad area on the SE flank.

Source: Sezione di Catania - Osservatorio Etneo (INGV)