Otto Mears Tollroad and Bonanza

Bonanza Mining District & Otto Mears Tollroad Brief History Bonanza has a rich history of mining beginning in 1880 and lasting until the 1930’s. Many mining structures still remain in the hills above Bonanza, CO. Rich silver ore was discovered in the mountains north of Saguache and west of Villa Grove in 1880, and the … Continue reading Otto Mears Tollroad and Bonanza