Thoughts

I don't want to be dogmatic but it occurs to me that this 13a face may have an open or singing mouth, there is possibly a hint of a lower and more definite upper lip. If so it is not the only chorister in the Avenue.

Is this pointy nosed face on 13a the same figure as is carved on Cove Stone I?

Interestingly enough this face on 13a is paired with a blocky face on neighbouring Stone 13b. I say they are paired because although these sculptures are different in style they both appear to be studying the same part of the southern sky (click here and scroll down to see the information about what I describe as "Face A").