With Kate Hen House it will be easy to get the swaps out but the fun is extracting the log?
Everything you will need to blow out the log is at the cache site all you need to do is find it and work out how to retrieve the log.
This is a fun cache and should be a bit of fun but please put everything back the way you found it so that the next cacher can have the same fun getting to the log. When replacing the cache back please do not push it too far down as it may get stuck.
There are also a few nearby caches to find so it will be a great walk around this area.
Have fun