PILOT KNOB (TRAVIS COUNTY)
PILOT KNOB (Travis County). Pilot Knob is a small summit (at 30°10' N, 97°42' W) on U.S. Highway 183 seven miles south of Austin in Travis County. It stands at an elevation of 711 feet above sea level, rising 100 to 150 feet above the surrounding countryside. Pilot Knob, formed at the bottom of a shallow sea about 80 million years ago, is said to be the only example of an exposed submarine volcano in Texas. A historical marker about this physical feature has been placed at the intersection of U.S. Highway 183 and Farm Road 1625.
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The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this article."PILOT KNOB (TRAVIS COUNTY)," Handbook of Texas Online (http://www.tshaonline.org/handbook/online/articles/rjp21), accessed February 07, 2016. Uploaded on June 15, 2010. Published by the Texas State Historical Association.