Where to see it today
Sentences without a label are documented facts; the others are marked "probable" or "uncertain".
Of the gold mine, the Roman colony and the centuries up to the Franks there remain traces that can still be seen: the heaps of the Bessa, the remains of Eporedia within today's town, the objects gathered in museums. This page says, place by place, what can be seen and where to look for practical information.
The Bessa Reserve
The Bessa terrace stretches for about 8 km from Mongrando to Cerrione, between the Olobbia and Elvo streams. Since 1985 the area has been protected as a regional park: today it is the Riserva Naturale Speciale della Bessa. The enormous heaps of pebbles left by the mine can still be seen in great numbers. On top of many of them hut floors survive, small hollows with remains of dry-stone walls: these were the workers' homes.
Among the heaps there also remain the low walls and pens of the farmers and shepherds of later centuries. At the Barbera quarry at Cerrione a Roman outlet channel has been excavated and covered with a protective roof. probable In the bed of the Elvo, which skirts the spoil heaps of the Bessa, gold is still panned, more plentiful because of the old waste from the washing. probable
The so-called castelliere of Mongrando has been protected since 1976 and was restored in 2005, but the excavations of the 1960s did not prove that it is ancient: according to Pipino it is a recent water-management structure. uncertain
Information, trails and the Vermogno visitor centre: on the website of the Ente di gestione delle Aree protette del Ticino e del Lago Maggiore, which manages the Reserve.
Sources: Gianotti 2011, p. 183; Gianotti 2016, pp. 1, 4; Balbo 2018, p. 57; Pipino 2010, pp. 1-3, 5, 7, 12, 20-22; Pipino 2020, p. 43; Pipino 2021a, p. 5; Sánchez-Palencia, Vaudagna 2008, p. 22; official website, consulted on 14 October 2026
Roman Ivrea
Scattered traces of the colony of Eporedia remain in today's town:
- The amphitheatre stood outside the town, along the road to Vercelli, about 500 metres from the eastern edge of the Roman settlement. According to a study of 2014 it is fenced and can be visited with a guide. Information page: italia.it.
- The Ponte Vecchio keeps part of its Roman base in squared blocks of local stone, which can be seen only from the upstream side.
- The main bridge: about 470 metres further downstream, opposite corso Re Umberto, its ruins remain in the riverbed and on the bottom of the Naviglio.
- The theatre: its semicircular shape can still be read in the streets and houses between via Cattedrale and piazza di Città. What remains is a brick wall along via Cattedrale and masonry in the cellars of palazzo Gariglietti.
- The cathedral: Roman columns and capitals of the Imperial age are reused in the ambulatory; the crypt holds the sarcophagus of Gaius Atecius Valerius, quaestor, aedile and duumvir, with a Celtic family name.
- The aqueduct: the conduit can be seen almost all the way through the woods between the Maresco di Bienca and Lake Coniglio.
Information about the town: Comune di Ivrea.
Sources: Legrottaglie 2014, p. 89; Curzio 2014, pp. 6, 10-12; Brecciaroli Taborelli 2007, pp. 129-131, 138; Sacchi 2014, pp. 52-53; Rubat Borel 2014, p. 43; official websites, consulted on 14 October 2026
The museums
At the Museo civico P.A. Garda in Ivrea you can see the stele of the freedman Lucius Ebutius Faustus with the carved groma, the bronze plates from the amphitheatre, the medallion of Antoninus Pius and the model of the La Serra excavation. Collections, opening times and tickets: on the Museo Garda website, on the page Opening times and prices.
Between 1975 and 1982 six single-pointed iron picks were found in the Barbera quarry at Cerrione. probable Two are on display at the Museo del Territorio in Biella; the other four, according to Pipino, are kept in the Museo Storico dell'Oro Italiano. probable Information page of the Biella museum: italia.it.
Sources: Curzio 2014, pp. 6-7; Legrottaglie 2014, p. 85; Barello 2014, p. 127; Brecciaroli Taborelli 2007, p. 136; Pipino 2010, p. 12; official websites, consulted on 14 October 2026
The other places on the map
- Mazzè: the stele, about 4 metres long, was found in 1988 on the bank of the Dora near the dam; since 2007 it has stood in the open in the village square. probable Information: Comune di Mazzè.
- Paraj Àuta: this is the Brich Appareglio at Pavone Canavese, where the most important settlement of the eastern Canavese stood. The sources collected do not describe any remains visible today.
- San Secondo di Salussola: an Early Christian basilica measuring 22.60 by 12.60 metres was excavated here between 1991 and 1998. The sources collected do not say whether or how it can be visited.
- Borgomasino: the Lombard necropolis was found between 1875 and 1897 while clay was being dug for a kiln; the excavations were not documented and most of the objects were dispersed. The sources do not mention any remains visible on the spot.
Sources: Gallo 2015, p. 4; Rubat Borel 2014, pp. 39-40; Pipino 2014, p. 9; Giostra 2014, pp. 158-159; official website, consulted on 14 October 2026
Open questions
That the amphitheatre can be visited with a guide is stated by a study of 2014: the opening days should be checked on the official websites. The sources collected do not say whether there is a waymarked trail along the aqueduct. The castelliere of Mongrando also remains debated, protected since 1976 but with no proof that it is ancient. uncertain
Sources: Curzio 2014, p. 12; Brecciaroli Taborelli 2007, p. 138; Pipino 2010, pp. 5, 20-22
Sources for this page
- F. Gianotti, Geological setting of the Pleistocene placers and Roman gold mines of the Ivrea Morainic Amphitheatre (Piedmont, NW Italy), in «Il Quaternario. Italian Journal of Quaternary Sciences», 24 (AIQUA abstracts, Rome, February 2011), 2011, pp. 183-185.
- F. Gianotti, La storia geologica della Bessa dal mare pliocenico alle glaciazioni quaternarie, in Biellese terra di miniere. Atti della tavola rotonda (Zubiena, Vermogno, Casa dell'Arco, 2016), ed. (to be completed), Eventi & Progetti Editore, year of printing (to be completed), pp. 1-5.
- M. Balbo, Lo sfruttamento delle risorse minerarie in area prealpina: il caso di Victimulae, in «Geographia Antiqua», XXVII, 2018 (Le Alpi degli antichi: rappresentazioni, itinerari, risorse), pp. 57-65.
- F.-J. Sánchez-Palencia, A. Vaudagna (dir.), J.L. Pecharromán, A. Beltrán, B. Currás, F. Alonso, M. Ruiz del Árbol, La minería romana de oro en Italia: la Bessa (Biella) como precedente republicano de la minería aurífera en Hispania. Actuaciones arqueológicas en el 2008, Proyecto Bessa – Memoria 2008, EST-AP, CCHS, CSIC – DocBi/Centro di Studi Biellesi, year of writing (to be completed), pp. 1-32.
- G. Pipino, Emergenze archeologiche, vere e presunte, nelle aurifodine della Bessa, in «Rivista di archeologia on-line», 27 July 2010, pp. 1-31 (republished in G. Pipino, Lo sfruttamento dei terrazzi auriferi nella Gallia Cisalpina, Ovada, Museo storico dell'Oro Italiano, 2015, pp. 147-170). (often against the mainstream)
- G. Pipino, Victimula-San Secondo e l'invenzione degli Ictimuli (o Vittimuli), in «Rivista di archeologia on-line» (Archeomedia), IX, no. 14, 16 July 2014, unnumbered pages (30 pp.). (often against the mainstream)
- G. Pipino, La «Ruina montium» di Plinio e la mineria aurifera romana nelle Asturie: osservazioni critiche sulla presunta applicazione a Las Medulas e alle aurifodine della Bessa, Ovada, Museo Storico dell'Oro Italiano (internal publication), November 2020, pp. 1-64. (often against the mainstream)
- G. Pipino, Le aurifodine romane della Bessa e le ricerche del CSIC (Consejo Superior de Investigaciones Científicas, Madrid), in «Rivista di archeologia on-line», XVI, no. 07, 1 April 2021, pp. 1-12. (often against the mainstream)
- L. Brecciaroli Taborelli, Eporedia tra tarda repubblica e primo impero: un aggiornamento, in L. Brecciaroli Taborelli (ed.), Forme e tempi dell'urbanizzazione nella Cisalpina (II secolo a.C.-I secolo d.C.). Atti delle Giornate di studio (Turin, 4-6 May 2006), Firenze, All'Insegna del Giglio, 2007, pp. 127-140.
- L.I. Curzio, Eporedia. Un GIS per la ricostruzione di Ivrea in epoca romana, coursework of the Laboratorio di Topografia antica, Università degli Studi di Bologna, academic year 2013/2014, pp. 1-22 (secondary source: university laboratory coursework; facts that come only from here are at most "probable").
- F. Sacchi, Splendida marmora. La decorazione architettonica romana, in A. Gabucci, L. Pejrani Baricco, S. Ratto (eds.), Per il Museo di Ivrea. La sezione archeologica del Museo civico P.A. Garda (ArcheologiaPiemonte, 3), Firenze, All'Insegna del Giglio, 2014, pp. 47-67.
- G. Legrottaglie, Elementi di rivestimento in bronzo dall'anfiteatro, in A. Gabucci, L. Pejrani Baricco, S. Ratto (eds.), Per il Museo di Ivrea. La sezione archeologica del Museo civico P.A. Garda (ArcheologiaPiemonte, 3), Firenze, All'Insegna del Giglio, 2014, pp. 85-93.
- F. Barello, La munificenza di Antonino Pio: un medaglione a Ivrea, in A. Gabucci, L. Pejrani Baricco, S. Ratto (eds.), Per il Museo di Ivrea. La sezione archeologica del Museo civico P.A. Garda (ArcheologiaPiemonte, 3), Firenze, All'Insegna del Giglio, 2014, pp. 125-131.
- F. Rubat Borel, Ivrea e il Canavese nella preistoria e protostoria, in A. Gabucci, L. Pejrani Baricco, S. Ratto (eds.), Per il Museo di Ivrea. La sezione archeologica del Museo civico P.A. Garda (ArcheologiaPiemonte, 3), Firenze, All'Insegna del Giglio, 2014, pp. 23-45.
- E. Gallo, Menhirs o stele megalitiche? Le tracce sopravissute del megalitismo in Canavese, in «I quaderni di Terra Mia», 13, Castellamonte, Associazione Terra Mia, 2015, pp. (to be completed) (pp. 1-9 in the file). (popular work)
- C. Giostra, Il ducato longobardo di Ivrea: la grande necropoli di Borgomasino, in A. Gabucci, L. Pejrani Baricco, S. Ratto (eds.), Per il Museo di Ivrea. La sezione archeologica del Museo civico P.A. Garda (ArcheologiaPiemonte, 3), Firenze, All'Insegna del Giglio, 2014, pp. 155-175.
- Official websites: Ente di gestione delle Aree protette del Ticino e del Lago Maggiore, Museo civico P.A. Garda, italia.it, the municipalities (Comuni) of Ivrea and Mazzè; consulted on 14 October 2026.
