This is the 6th cache on the TARDIS trail. Each cache gets it's name from a location featured in the BBC TV series Doctor Who. If you keep your eyes open you might even see Doctor Who's time travelling maching known as the TARDIS.
Raxacoricofallapatorius is the home of criminal family - the slitheen. This alien can disguise itself using the skin of others like a suit. Sounds a little horrifying until you see it on screen. The costumes looks very, well, fake.