Las Conchillas
San Antonio Este, Río Negro Province, Argentina
Las Conchillas runs about 12 kilometers along Bahía de las Ballenas near San Antonio Este in Argentina's Río Negro province, and the name gives it away, the whole stretch is covered in bleached white shells washed up from the San Matías Gulf. The water stays calm and clear enough for the mussel and clam gathering locals come here for.
The shell gathering and calm water give it a genuine local following, but the total lack of services and rustic access mean it stays a deliberate choice rather than a casual stop.
How we score beachesBring your own food and water. There are only two small restaurants along the whole stretch, and most visitors treat it as a pack in, pack out kind of place.
Reach it via Ruta 3 to San Antonio Este, then the coastal gravel road known locally as the Camino de la Costa. Public buses run only a couple times a day, so a car is close to necessary. Park in designated areas only, driving onto the shell beds themselves isn't allowed.
Access is rustic with no paved surface, described locally as completely undeveloped. There's no confirmed accommodation for strollers or wheelchairs.
Summer, December through March, is the only real swimming season on this part of the Patagonian coast. The rest of the year brings cold wind off the steppe and conditions most visitors would find rough.
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