Playa de Arenillas, Coastal beach in Castro Urdiales, Spain
Playa de Arenillas is a small beach in Castro Urdiales extending 50 meters along the Cantabrian coast with fine sand and silt deposits. The shoreline features a mix of sandy sections and muddy banks that shift with tidal changes, creating varied surfaces across its 15-meter width.
This beach formed through natural coastal processes and has remained part of the local landscape for centuries. Its composition reflects ongoing geological changes that have shaped the Cantabrian shoreline over time.
Local people use this small beach as a quiet meeting place where fishing traditions remain visible in daily routines. The way visitors and residents move through the space reflects how the community values its waterfront.
Basic facilities including showers and waste bins are available, and the beach is free to visit. Walking paths connect it directly to central Castro Urdiales, making it easy to reach on foot without needing transport.
At high tide, the silt deposits create distinctive patterns on the seabed that reveal how water and land interact at this spot. Observing these natural formations offers insight into the coastal forces that constantly reshape the shoreline.
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