This is the name (translated) of a small village in North Wales
. Its main industries are slate
(now largely discontinued), and guys who may as well already be dead and therefore don't care about the consequences of their acts
. Compare Aberystwyth
I'm quite surprised so many people "got" that. For those still scratching their heads, look at : Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch. There's Clever.