Playa de Gulpiyuri

Playa de Gulpiyuri is a flooded sinkhole with an inland beach located near Llanes, Spain around 100 m from the Cantabrian Sea. Roughly 40 meters in length, it is fully tidal due to a series of underground tunnels carved by the salt water of the Cantabrian Sea which allows water from the Bay of Bisc...

Geographical coordinates: 43.4167, -4.75
Approximate population: 13,915