Distrito minero Linares-La Carolina Historical milestone · La Carolina, Sierra Morena, Jaén Image of La Carolina, not of the place itself. La Carolina, together with Linares, formed the great Linares-La Carolina lead mining district, at its height in the early 20th century; in 1909 a narrow-gauge railway connected the two towns through the mining industrial areas. Photo: jose antonio casanov… (CC BY-SA 3.0) What to see and do in La Carolina