For the Guardian, he named his top 10 subterranean books. One title on the list:
Moonfleet by J Meade FalknerRead about all ten books on Smith's list.
Smuggling was practised not only on the Spanish Main but around our sceptr'd Isle. At New Brighton, Merseyside, where my family is from, the privateers salted their booty away beneath the butter-soft sandstone. Moonfleet contains my cri de coeur: "I believe there never was a boy yet who saw a hole in the ground, or a cave in a hill, or much more an underground passage, but longed incontinently to be into it and discover whither it led."