stranger things have happened.
http://www.lft.k12.la.us/chs/la_studies/ParishSeries/IberiaParish/LakePeigneur.htm
Wow !
At first it was just a small opening, but as the water began to rush through it, the hole began to enlarge itself. More water rushed through, making the hole still larger, until finally it was big enough to engulf barges, tugboats, and the drilling rig that had begun the whole thing.
You link to Lake Peigneur is quite a story.
Wonder what the diameter of that drill was, that started the process that drained that whole lake?
"According to the official report by federal mine safety investigators, "while the miners were escaping, the inundation rapidly became a torrent as water from Lake Peigneur drained into the mine at the 1,300-foot level. As the lake began emptying into the mine, a vast whirlpool approximately one-fourth of a mile in diameter developed in the lake. It caught in its grip a tugboat, a string of barges, and two Texaco oil rigs. Two boats on the lake managed to power their boat to shore. Within the next three hours, the entire lake disappeared into the mine. Normally, water from the lake flowed out through the Delcambre Canal to Vermilion Bay in the Gulf of Mexico. With the emptying of the lake, however, the water was flowing from the Delcambre Canal into the crater. This reverse flow continued for the next two days until the lake was once again filled with water, and the normal flow out into the canal recommenced. Approximately 30 shrimp boats in the canal, which was lined with seafood companies, were beached when the water level dropped as the canal was refilling Lake Peigneur. They were later refloated when the lake stabilized and the canal rose to its normal level." "