Gaffy,
Thanks for your "speculative answer" to my question.
I appreciate your thinking out of the box as it were.
Here in our area in Australia we have many towns and villages with names that have aboriginal origins. Without local knowledge, many of these would be impossible to pronounce and even harder to interpret.
I live in MURWILLUMBAH (Place of many possums), UKI, MULLUMBIMBY, TUMBULGUM ETC are nearby; so your thoughts on "hollow of the pigs", sits comfortably with me.
Many thanks.
Palmira