San Martin, Mendoza. 90% Criolla Chica, 10% Criolla Grande. The Morcos family originally planted their vines in the 1930’s and third generation Matias Morcos makes Luna Duna at the family winery. The vines are located in Eastern Mendoza in the subregion of Alto Verde, San Martin. Some of Mendoza’s oldest vines come from the East, an area that is often overlooked. The vines are farmed with no pesticides and fermentation is natural in concrete.