La castaña, producto tradicional de Valdelarco Food and drink · Valdelarco, Sierra de Huelva, Huelva Image of Valdelarco, not of the place itself. Historically the chestnut has been Valdelarco's main agricultural product, along with smaller-scale production of oil, wine and fruit on dry-farmed mountain and highland terrain. Photo: Xemenendura (CC BY-SA 3.0) What to see and do in Valdelarco