This was the only fungus I could identify from the dozen or so I saw on this beautiful sunny Autumn day. It was obviously a Puffball as its near neighbours had the characteristic hole from which spores puffed in a thin wisp of  "smoke". 

Great Orme, North Wales among rocks, 26th October 2004

Added on 28th October 2004, amended on January 29th 2005, updated Nov 19th 2014