| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Monte della Croce, Montefiascone, Viterbo Province, Lazio, Italy | 42° 31' 54" N | 12° 1' 33" E | 1.3km (0.8 miles) | |
| Montefiascone caldera, Montefiascone, Viterbo Province, Lazio, Italy | 42° 32' 32" N | 12° 0' 32" E | 1.9km (1.2 miles) | |
| Forcinello carbonatite, Montefiascone, Viterbo Province, Lazio, Italy | 42° 32' 59" N | 12° 0' 0" E | 2.7km (1.7 miles) | |
| Monte Iugo, Viterbo, Viterbo Province, Lazio, Italy | 42° 29' 7" N | 12° 3' 13" E | 6.6km (4.1 miles) | |
| Legarelle (Le Lagarelle), Viterbo, Viterbo Province, Lazio, Italy | 42° 29' 51" N | 12° 6' 16" E | 7.8km (4.8 miles) | |
| Trachyte quarry, Ponzano, Bagnoregio, Viterbo Province, Lazio, Italy | 42° 37' 8" N | 12° 4' 40" E | 9.3km (5.8 miles) | |
| Ponzano, Bagnoregio, Viterbo Province, Lazio, Italy | 42° 37' 16" N | 12° 4' 44" E | 9.6km (5.9 miles) | |
| Trachyte quarry, Bolsena, Viterbo Province, Lazio, Italy | 42° 38' 29" N | 12° 1' 18" E | 11.0km (6.8 miles) | |
| Bagnaia, Viterbo, Viterbo Province, Lazio, Italy | 42° 25' 40" N | 12° 9' 18" E | 16.2km (10.1 miles) | |
| Trachyte quarry, Gradoli, Viterbo Province, Lazio, Italy | 42° 38' 42" N | 11° 52' 44" E | 16.9km (10.5 miles) | |
| Fagianello, Viterbo, Viterbo Province, Lazio, Italy | 42° 23' 40" N | 12° 6' 35" E | 17.6km (11.0 miles) | |
| Monte di Cellere, Cellere, Viterbo Province, Lazio, Italy | 42° 31' 54" N | 11° 48' 42" E | 18.1km (11.2 miles) | |
| Casale Rosati, Valentano, Viterbo Province, Lazio, Italy | 42° 33' 50" N | 11° 48' 39" E | 18.2km (11.3 miles) | |
| Mt Saliette, Valentano, Viterbo Province, Lazio, Italy | 42° 33' 47" N | 11° 47' 48" E | 19.4km (12.0 miles) | |
| Latera solfatara, Latera, Viterbo Province, Lazio, Italy | 42° 37' 3" N | 11° 49' 5" E | 19.4km (12.1 miles) | |
| Poggio Pinzo (Gradoli pozzolana quarry), Gradoli, Viterbo Province, Lazio, Italy | 42° 38' 16" N | 11° 49' 58" E | 19.4km (12.1 miles) | |
| Castellaccio di Petrignano, Viterbo, Viterbo Province, Lazio, Italy | 42° 22' 4" N | 12° 5' 17" E | 20.0km (12.4 miles) | |
| San Martino al Cimino, Viterbo, Viterbo Province, Lazio, Italy | 42° 22' 7" N | 12° 7' 30" E | 20.2km (12.6 miles) | |
| Montenero Quarry, Onano, Viterbo Province, Lazio, Italy | 42° 38' 34" N | 11° 49' 27" E | 20.3km (12.6 miles) | |
| Tobia, Viterbo, Viterbo Province, Lazio, Italy | 42° 21' 35" N | 12° 6' 0" E | 21.1km (13.1 miles) | |
| Le Piagge, Soriano nel Cimino, Viterbo Province, Lazio, Italy | 42° 24' 10" N | 12° 13' 16" E | 22.0km (13.7 miles) | |
| Pian di San Martino, Vetralla, Viterbo Province, Lazio, Italy | 42° 20' 46" N | 12° 3' 45" E | 22.0km (13.7 miles) | |
| Le Carcarelle, Viterbo, Viterbo Province, Lazio, Italy | 42° 20' 55" N | 12° 5' 53" E | 22.2km (13.8 miles) | |
| Poggio Nibbio, Viterbo, Viterbo Province, Lazio, Italy | 42° 22' 0" N | 12° 10' 0" E | 22.5km (14.0 miles) | |
| Mezzano (Lago di Mezzano), Valentano, Viterbo Province, Lazio, Italy | 42° 36' 42" N | 11° 46' 10" E | 22.8km (14.2 miles) | |
| Tre Croci, Vetralla, Viterbo Province, Lazio, Italy | 42° 19' 54" N | 12° 5' 4" E | 23.8km (14.8 miles) | |
| La Botte (Botte), Vetralla, Viterbo Province, Lazio, Italy | 42° 18' 11" N | 12° 5' 19" E | 27.0km (16.8 miles) | |
| Case Collina, Pitigliano, Grosseto Province, Tuscany, Italy | 42° 38' 32" N | 11° 43' 49" E | 27.1km (16.8 miles) | |
| San Rocco, Caprarola, Viterbo Province, Lazio, Italy | 42° 19' 55" N | 12° 12' 55" E | 27.9km (17.4 miles) | |
| Poggio Bottinello, Pitigliano, Grosseto Province, Tuscany, Italy | 42° 35' 54" N | 11° 40' 45" E | 29.6km (18.4 miles) | |
Trachyte quarry, Ponzano, Bagnoregio, Viterbo Province, Lazio, Italy