Alsina beach, Beach in Santa Cruz, Argentina.

Alsina Beach is a sandy stretch along the Gulf of San Jorge in Santa Cruz, extending roughly 3 kilometers along the shoreline. The fine golden sand stands out distinctly against the rocky coastlines found in the surrounding area.

The beach is named after the Hermanos Acinas company, which until the end of the last century extracted lime from clams abundant in the area. Only vestiges of that exploitation remain. The nearby La Calera curve on Route 3, with a nearly 90-degree turn, is also named for the lime kilns and has been the site of hundreds of accidents.

The name comes from the Hermanos Acinas company, which extracted lime from the abundant clams here until the end of the last century; the beach is also called Alsina because of the similar sound. Kitesurfers gather on the sand, drawn by the area's winds, and quad bikes and similar vehicles run excursions along the shore.

Access is only feasible at low tide, since Punta Peligro and cliffs over 80 metres flank the beach at both ends. The turn-off lies at kilometre 1965 of National Route 3, metres from the La Calera bend, a nearly 90-degree curve with a record of accidents; crashed vehicles risk sliding down the slope. No lifeguards or rescue services operate on this or neighbouring beaches.

On the coldest days, when the tide withdraws, a band of ice forms across the full width of the sand. The beach is also the last southward in a chain of seven fine-sand beaches; beyond it, north and south, the shores turn to gravel. Kitesurfers gather here, drawn by the region's winds.