This directory you talking about, is only in the installation situation.
This directory is used during the build of the site, but not copied when the site is published.
This is in the locales.xml.config:
<?xml version =”1.0” encoding=”UTF-8” ?>
<root>
<language name=”English” key=”en-US” fallback=””/>
</root>
I cannot find the file locales.xml when the web app is build. Is there a reason for?