Pilot Knob (Austin, Texas)
A Geologic Tour of Austin, TX - Pilot Knob, Balcones Fault Zone, and Ancient Lagoons!
Exploring pilot knob
Are there volcanoes in Texas?
Pilot Knob is the eroded core of an extinct volcano located 8 miles (13 km) south of central Austin, Texas, near Austin-Bergstrom International Airport and McKinney Falls State Park.
Mountains and mountain ranges
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History of the volcano
Source of the magma