Balcones Fault
The Balcones () Fault or Balcones Fault Zone is an area of largely normal faulting in the U.S. state of Texas that runs roughly from the southwest part of the state near Del Rio to the north-central region near Dallas along Interstate 35. Derived from the Spanish word in architecture for “balcony,” or “vantage point” in geology and nature, the Balcones feature is said to have been named by Spanish explorer Bernardo de Miranda in 1756, part of El Camino Real, or the "King’s Highway" that skirted the fault line.