Being at a bit of a loose end: am latching on to the topic of wildly-long place names. Here in the UK, we have a classic of such, in Wales: the village of Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch – which outstrips length-wise, the lake in Massachusetts mentioned earlier in this thread.
Honesty compels admitting that this name is reputedly not fully true-bill, although it entirely has a full meaning in the Welsh language: the village’s original name was just Llanfairpwllgwyngyll; the rest was added on as a satire on “tiny Welsh villages with hugely-long Welsh names”, plus as a publicity stunt (including the village’s having a station on a rail route – thus from then on, the oddity of “the longest-named railway station in the world”).
I understand that there’s a place in New Zealand, the length of whose name makes both the Massachusetts lake and the Welsh village, look brief and terse by comparison; but I’ll leave the details of same, to New Zealand participants on the board.