Weather by Shiloh Payne, Tobias Jurss-Lewis 15th Dec 2020 2:08 PM Premium Content  Waves have crashed through the Bribie Island dunes, tearing a hole in the island's northern point and potentially putting at risk dozens of beachfront mansions. The cyclonic weather lashing the state this week exacerbated a long term erosion problem on the island, allowing water to break through into Pumicestone Passenger. "The dunes have got so narrow from previous erosion events that they were just waiting for the big event to come along and overwash those dunes," Principal Coastal Scientist Sel Saltman said. "That's what we saw on Monday." Caloundra resident Zane Jones has snapped the big swell and high tides that caused Bribie Island to break through.