El Marciano is Alfredo's main Garnacha bottling, made from 50-90 year-old vines grown on decomposed granite soils at a staggering 1,000-1,200 meters elevation in the Sierra de Gredos mountain range around the village of Navaredondilla...which is known for UFO sightings, thus the wine's name. Grapes are fermented - including some or all stems depending on vintage - with wild yeasts and raised in steel vat.