[Edi]

It seems I owe apologies for doubting some people. Indeed, there does seem to be a Merman Village site, at #565. Site number #564 is City of the Damned, which is basically the same as The Forgotten City but a death site. There is also possibly an as yet completely unnamed fire site that has no effects whatsoever at #566. The DB has been updated correctly. The obvious conclusion from this is that either the map file parser craps out at 563 #knownfeature commands or there was something else that gave me all those "sprnumber too high for this map file" errors when I tried to enter them. But that's the end of it. No more after that.

Edi