Trou David, Cave entrance in Saint-Martin, France.
Trou David is a natural limestone cave entrance on the coast of Saint-Martin with vertical walls that descend into a deep underground chamber system. The opening is approximately 25 meters (80 feet) wide and leads into a large cavern that formed through gradual water erosion over millions of years.
The cave formation dates back approximately 50 million years to when volcanic activity during the Miocene period lifted the seabed closer to the surface. This geological shift created the conditions for water erosion that eventually shaped the cave as it exists today.
Locals call this place either Trou David or Trou du Diable, names that reflect how the water moves and swirls inside the cave opening in different ways depending on the weather and tides.
The cave entrance is reachable from the coastal path between Red Bay and Pointe du Bluff, where clear signage marks the way. Visit during low tide for easier access and calmer water conditions that allow for better exploration of the opening.
The cave walls house a population of iguanas that have adapted to the unique conditions of this marine entrance. The surrounding waters teem with tropical fish species and sea turtles that regularly pass through this area.
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