It is a beach located in the bay of Montjoi. It is located 8 kilometers from the town of Roses. It is accessed by the coastal path. It is very close to the Montjoi cove, from which it is only separated by some reefs. It is 50 meters long and 15 meters wide of coarse sand, with the seabed that acquires a sharp drop. Since 2009 it has enjoyed the European environmental certificate EMAS
, a Neolithic settlement, reveals a glimpse into ancient urbanism and cabins. The site, spanning 800 m², showcases well-preserved remnants of sub-rectangular houses forming a 'U' shape, an isolated oval cabin, and traces of communal life. The oval cabin, measuring 10 x 7 m, likely served as a communal hub for cooking and essential activities. Archaeological phases, from the early to late Neolithic, reveal evolving structures and cultural artifacts. Nearby, the Serra de Rodes and Cap de Creus boast a concentration of dolmens, illuminating the region's megalithic heritage. Ca N'Isach offers a remarkable window into Neolithic life, with a rich history spanning millennia.