The Balcones Fault is a significant geological feature located in central Texas, USA. It is a fault line that marks the boundary between the Edwards Plateau and the Gulf Coastal Plain. This fault is known for its steep escarpments and has played a crucial role in shaping the landscape of the region. The fault is part of the larger Balcones Fault Zone, which extends approximately 300 miles. It is primarily a normal fault, meaning that the land on one side has dropped relative to the other. The movement along this fault has influenced local ecosystems and water drainage patterns, contributing to the unique geography of areas like Austin and San Antonio.