Spiaggia del Carrione, Marina di Carrara

What Seaglassmap found here

A small free beach at the mouth of the Carrione, tucked beside a shipping container depot, with no sunbeds and no facilities. What it has instead is shingle, gentle water and a lot of glass, most of it properly frosted. Smoothed lumps of marble turn up too, carried down from the Carrara quarries by the stream. A visitor reported building works blocking the access in early 2025, so it is worth checking locally before you make the trip.