Named for silver mine opened near pass by Spaniards in 1700s or earlier. Ore was inferior, and mine was abandoned; but 14 shafts (some interconnecting) remain. Near the mine are remnants of a fortification made by 30 men under the leadership of James Bowie, later (1836) a hero of the siege to the Alamo. In 1831, while at work at this mine, Bowie's men repulsed a Comanche attack in a fierce, all-day battle. Hero of the fight was Bowie's slave, "Black Jim Bowie," who risked his life by leaving the fortification to bring water to the besieged. 1968