Mitsero is a village in a heavily wooded area of central Cyprus, 28 km SW of Nicosia. Investigations in the 1920s led to the discovery of gold and silver ores which were subsequently exploited by the Hellenic Mining Co which ceased operation at the end of the decade. The mines were revived after the Second World War revived but for copper pyrites rather than for gold and silver, and worked from 1952 until the 1970s. The extensive remains of mining activity now lie within the Troodos Geopark. They include the crushing plant, a narrow gauge railway system, a steel lattice headstock and a winding house, together with Kokkinopezoula, the red, acidic lake, which, as a result of toxins released by mining, contains no vegetation. Visitors can also see prehistoric remains from 8th century BC discovered during mining operations.