Fornace, with its four built up centres, rises on the terraced moraines of the south east slopes of Montepiano at an altitude of 740 m.
Fornace, with Albiano, Lona-Lases and S. Mauro is one of the main centres for porphyry quarrying and working. The mining industry is the main source of income for the area. The territory offers the chance of many pleasant walks and excursions. These include, for example, the famous historic-cultural itinerary known as the Monte Piano Route, which starts from the Castle square and leads to the many remains, open to visitors, of the mining activities dating back to the middle ages.