La Cuevona, Natural cave tunnel in Ribadesella, Spain.
La Cuevona is a natural tunnel carved through limestone rock that extends for a considerable distance and remains wide enough for vehicle passage. A stream flows through the interior while a paved road runs alongside the water, allowing both cars and pedestrians to move through the cave.
The cave originally served as a natural pathway for people traveling to Cuevas del Agua village, before later being developed for modern traffic. Over time, a simple footpath evolved into a proper road that accommodated vehicles, reshaping how the area functioned.
The site is experienced by locals and visitors as a natural wonder where geology becomes part of everyday life. People pass through it regularly for transportation, giving it a functional role that sets it apart from typical tourist caves.
Visitors will find two parking areas near the entrance, making it easy to access the cave on foot. Walking through the passage requires standard footwear and is accessible for most people regardless of mobility level.
What makes this place unusual is that cars drive between limestone walls while water flows alongside them, an uncommon example of a cave serving as an everyday road. This blend of natural landscape and modern traffic is rare in Europe and creates an odd experience for visitors passing through.
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