The small black underground mammal was a mole ...the point was to avoid saying "Wally" as my first attempt in case it caused offence.

Yes, Eyebeetha is Ibiza, in the usual way that people round here refer to it for holidays and night clubs and a style of music, even. Maybe there's a connection with Eyerack?

Sometimes the English name for a place (such as Florence for Firenze) is the same in other languages (such as French), which might indicate a bit more history to the re-naming. Most languages have some different names for places in them ... in Welsh, for example, London becomes Llundain, and there are a number of other English cities with Welsh versions. So it's not just mis- or different pronunciation that's going on.