Ferrier of Tannerre-en-Puisaye
Main entrance on route des Mussots  | |
Location of Antique ferrier of Tannerre in France  | |
| Location | Tannerre-en-Puisaye, Yonne, Burgundy, France | 
|---|---|
| Coordinates | 47°44′15″N 3°08′20″E / 47.737386°N 3.138761°E | 
| Altitude | 221 m (725 ft) | 
| Type | Mine | 
| Area | 30 ha (74 acres) | 
| History | |
| Periods | Iron Age, Roman period, Middle Ages, Modern era | 
| Cultures | La Tène, Gallo-Roman, Merovingian | 
| Satellite of | Auxerre | 
| Site notes | |
| Ownership | Part council / Part private | 
| Official name | Ferrier antique - Archaeological site | 
| Designated | 1982 | 
| Reference no. | Base Mérimée: PA00113898, Ministère français de la Culture. (in French) | 
The ancient ferrier of Tannerre-en-Puisaye, located in the village of Tannerre-en-Puisaye in Burgundy, France, is a historic site used for mining and working of iron. The works date from the Gallic and Gallo-Roman times. It is one of two largest ferriers in France and one of the largest in Europe. Industrial exploitation of the site ceased when it was classed as French Heritage monument in 1982.