"Who lives in a house like this?" ......

..... was the first thing that popped into my head when I saw this little hole in a tree trunk this morning! 

Some blippers may remember a TV programme called "Through The Keyhole" where someone walked around a celebrity's house pointing out various clues and then the host, Loyd Grossman, always asked the audience: "Who lives in a house like this?".  I think today, I can safely answer: "snails"!

Many thanks admirer for hosting the Silly Saturday challenge.