Drupal 7 custom block.tpl.php for specific region I am new to drupal 7 and really struggling with this one:

http://drupal.org/node/104319

I have a region called navigation 

in my .info
regions[navigation]     = Navigation bar

for this region I want to use a custom tpl.php file. I have tried 

  block-navigation.tpl.php


like in the example, and put it at the theme root and in the templates folder with no luck. I've cleared the cache and insured that a standard working block.tpl.php is in place. To no avail.

ANSWER:

I needed BOTH a region--navigation.tpl.php AND a block--navigation.tpl.php with a double -- both times.

1000 views on this question earned me the popular question badge. But you guys can't find it in your heart to upvote it more than 1 time. Laaaammmmmeeee....
To use a custom tpl.php file for "navigation" region, you should use region--navigation.tpl.php