Been round and showed my dad your pic mate , he is pretty sure its not a cannon , he reckons its not tapered enough, thinks it might also be an old vent shaft (chimney) there is something a bit similar albeit not cut down near fairhaven if i remember rightly, he also thought it looked like a victorian street lamp and a post for holding the old tram cables ! ... Check the pics of two of his , see how they taper mate....hope this helps :coffee: