As the lava made its way down Etna’s flanks and into Valle de Bove, it quickly reached lengths of a few kilometres.
The activity peaked by about 3am and waned about 40 minutes later.
Boris Behncke, a volcanologist who lives on the island, dubbed last night’s episode the “greatest show on Earth”.
The expert, who only lives about 12.4 miles (20km) from Etna, shared online breathtaking images of the volcano’s lava plumes painting the skies with an eerie red glow.
He tweeted: “#Etna produced her 13th paroxysm at the Southeast Crater during the night of March 14 to 15, 2021.