The interpretation and reconstruction of subsurface environments is an important task continually facing archaeologists. Of the various geophysical techniques employed in such work, GPR is increasingly being used to image and assess archaeological sites in a noninvasive manner. The Cave of Letters located in the Judean Desert of Israel provided the first site to successfully conduct a GPR experiment inside a cave environment. Upon entry to the Cave (Chamber B) a series of experimental grid lines were chosen to test a range of frequencies (100 - 450 MHz). The GPR results, with depths ranging from 2 - 8 m, directed subsurface endoscopic viewing and initial archaeological probing. Even with minimal probing many significant artifacts were located.
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