Each page in your site has an RSS feed. All you need to do is add ".rss" to any page and the RSS feed will return all visible sub-pages. Each sub-page shows up as an entry in any given page's RSS feed.
If a page does not have any sub-pages but it has the image gallery module installed, each image in the gallery will show up as an entry in the RSS feed.
Append ".rss" to the end of ANY url.
http://www.yoursite.com/blog (normal URL) http://www.yoursite.com/blog.rss (RSS feed URL containing sub-pages)