About Lake Peigneur
On November 20, 1980, Lake Peigneur performed one of the most absurd disappearing acts in industrial history. Exploratory drilling on the lake opened a path into the enormous salt mine beneath it. Water began pouring underground, the opening widened, and a whirlpool formed on the surface as the lake started draining into the mine.
The vortex pulled in a drilling rig, barges, boats, equipment, a newly built house, and roughly sixty-five acres of land. Workers underground escaped, and remarkably no lives were lost. The destruction did not stop at the shoreline. As the lake level collapsed, the flow of the Delcambre Canal reversed direction, pulling water back toward the emptying lake and producing a temporary waterfall reportedly around 150 feet high.
Over the next two days, water from the canal refilled the basin. Nine lost barges later rose back to the surface after pressure equalized. The event permanently transformed Lake Peigneur from a shallow freshwater lake into a much deeper brackish body of water. The exact chain of responsibility became the subject of litigation, and the heritage trail notes that the cause was never officially determined in a final public finding.
Visitors can look across Lake Peigneur from the Jefferson Island area at Rip Van Winkle Gardens, where part of the property was lost during the disaster. The calm water gives almost no hint that a lake once drained into the ground here, reversed a canal, swallowed industrial equipment, and then filled back up. That contrast is precisely what makes the place so bizarre.