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Relatively small, but high-quality chert cobble found in an apparent cache at the Linn Lake site along the Guadalupe River some 15 miles from the head of San Antonio Bay and 30 miles from the actual coastline. These “tested” cobbles are 10-12 centimeters in length and probably brought to the site from gravel bars along the river for future use. This is one of the few areas along the Texas coast where suitable lithic materials were accessible with a day’s walk from the coast. Photo by Bill Birmingham.

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