Approx. 60 cm (24")
below unglaciated and undisturbed terrain surface.
Bird-human
petroglyph with
bird emerging downward from mouth.
Below:
Close-up of emerging bird.
Note the sharp V-profile
grooves, professionally identified as having been made with a
sharp-edged object (flint?) drawn forcefully across the surface of the
rock. (Not worm fossils as some archaeologists have
insisted.)
