When a Louisiana sheriff and a fisherman investigated a missing man’s abandoned camp in the summer of 1923, they found his fire pit filled with water so cold it ached, and a journal entry noting that the water at a remote swamp crossing was “wrong. ” The discovery pulled them into one of the most disturbing forgotten cases in the Atchafalaya Basin, a mystery involving impossible depths, a decades-old disappearance, and claims about a place the local Chitimacha reportedly called “where the world thins. ”
Prosper Thibodeau, a 41-year-old guide known for knowing the deepest parts of the swamp, vanished on July 4, 1923, leaving his pirogue tied to the dock and his rifle on the wall. Three weeks later, commercial fisherman Vernon Galloway, 37, found Prosper’s camp intact, which violated the natural order of the humid bayou where gear rots within days and vegetation reclaims cleared ground almost immediately.
Sheriff Odell Comeau, a 53-year-old veteran of two decades in office, accompanied Vernon to the site. Examining the camp, Comeau found Pros’s journal in a waterproof pouch. The final entry, dated July 3, read: “The water at the old crossing is wrong. Color’s off, depth’s off.
Going to check the upstream source tomorrow. ”
Vernon identified the location as a confluence of three channels known as the old crossing, a place locals avoided due to dangerous currents and an older reputation. He recalled his grandfather’s warnings that the crossing was where the swamp dreamed, where water glowed without a moon and the Chitimacha had their own name for the area. The two men navigated to the confluence and found a central pool about 50 feet across, its water impossibly clear.
At the bottom, roughly 9 feet down, were regular geometric patterns that looked like building foundations, despite the fact that the region flooded yearly and no structures had ever been recorded there. Ignoring Vernon’s protests, Comeau stripped off his gear and dove in. Vernon watched him reach the bottom and retrieve a silver object, but then the sheriff stopped moving near the surface and began to sink. Moments later, Vernon heard the sheriff scream while he was still underwater, an impossibility.
Comeau was then violently propelled to the surface, coughing up water that steamed in the humid air. Comeau emerged clutching a tarnished silver locket containing a water-damaged photograph. He claimed the foundations were not human work, that the water was not water, and that the bottom was not the bottom. He reported seeing a seemingly endless depth beneath the stones and massive shapes moving within it, one of which had turned toward him with something like eyes.
The experience aged both men. Vernon began avoiding the channels near the crossing, and Comeau developed a habit of staring at water, searching for signs of wrongness. They agreed not to share their story, knowing no one would believe them. Comeau wrote a full account of the events, sealed it in an envelope with instructions not to open it until after his death, and hid it behind a loose board in his office.
It was discovered during renovations in 1962, but the instructions had faded to illegibility, and the account was eventually donated to a historical society where it sat unread as “paranoid ramblings. ”
Vernon later recognized the damaged photograph in the locket, believing it might be Marguerite Devereaux, a schoolteacher who vanished from Richelieu Bend around 1893 after reportedly asking questions about the old places in the swamp. In 1953, a team of geologists surveyed the area and ignored Vernon’s warnings to avoid the old crossing. Their boats were found tied to trees near the confluence, with equipment stowed and supplies untouched, but the men were never seen again.
A notebook found in one boat contained an entry describing the pool of clear water with foundations, ending mid-sentence. They were officially listed as missing, presumed drowned. The case remains unsolved. Prosper Thibodeau is still listed as missing, Marguerite Devereaux as presumed drowned, and the geologists’ deaths as accidents.
Locals reportedly still avoid the spot where three channels meet and the water runs clear when it should be murky. The locket was eventually donated to a New Orleans museum, where it sits in storage, never displayed, because handlers report the unsettling feeling that the damaged photograph is watching them.