In the seismic-reflection profiles in the south-western part of the Sea of Galilee we note a submerged, slightly asymmetric cone-shaped pile of stones, rising above the gently sloping (<2°) sandy bottom of the lake. Sonar images show that the pile is circular in plan, and the Chirp-reflection profiles show that the western face is somewhat steeper than the eastern part...
http://onlinelibrary.wiley.com/doi/10.1111/1095-9270.12005/full
http://onlinelibrary.wiley.com/doi/10.1111/1095-9270.12005/full