Reading Coarelli 2003 again I wonder if his argument might be strengthened if he considered “Colle delle Picche” to possible derive from picus not pica. Both derive from pingo, it is thought. And the picus is of course the bird of Mars.
On the whole his landscape speculations and optimistic readings of Festus and Strabo are a bit much for me, but I did start thinking about woodpeckers again.
Liv Mariah Yarrow 