Redirect all subpages back to the front page
I assume "pictures", is a content type. If that's not the case, this may not work. Please provide more details about your setup in that case.


Install the Chaos tool suite (ctools) module, and enable the Page Manager module 
Enable the node template
Create a variant of type "HTTP response code".
Set the response code to 301.
Set the path to &lt;front&gt;
Go to "Selection rules" in the left menu
Add "Node:type == 'pictures'"
Save