Secret passages. 'Spaw?
But you advertise yours with such gusto!
Sunday afternoon now, BTW, and still sunny. I think this thread's hanging by by a...well, by summat, until the autumn. Then we can wrap it in straw, paint its name on its shell and stuff in it a cardboard box to be accidentally incorporated into the bonfire on Guy Fawkes' Night.
Failing that, I'll get the ether ('Spaw - put it down; you know you should never mix your drinks!)