Barely a bump in the landscape not far from McKinney Falls State Park, Pilot Knob is the best of about ten very small volcanoes in the Austin area. That's because it's the most visible and accessible, according to Dr. Dan Barker at UT's Geological Science Department, while remnants of the others lie under railroad tracks, Huston-Tillotson College, St. Edward's University, and Rosewood Park. You can visit Pilot Knob because the city owns part of it. Perched on the top of the 70-75 million year old volcano is a water reservoir and a few benches.
