How are pages that aren't linked from the front-end being found by google?
 

I have a section of my website that I'm still developing, which has no links to it what-so-ever - and I just noticed that it's showing up on google results.


Is there something going on behind the scenes, like an automated site-map being generated in a header or something?


The only other thing I can think of is Google finding it via Google Analytics grabbing the page info when I view it.