I would like to be able to explore a website's directory structure and content... sorta like what appears in a web browser when you access a directory without an html index or document... or a listing like you see when using FTP. I'm sure this is the way search engine "spiders" search the web...
I have run into a few occasions where I suspect the content I'm looking for is on a website, but am unable to navigate to it by the html links on the webpages.
How to do this?

I have run into a few occasions where I suspect the content I'm looking for is on a website, but am unable to navigate to it by the html links on the webpages.
How to do this?

