The slider is generated from the
media.phtml file. The URL for the thumbnail images is obtained with
<?php echo $this->helper('catalog/image')->init($this->getProduct(), 'thumbnail', $_image->getFile())->resize($thumbWidth, $thumbHeight); ?>
After some research I've found that all the images should be under
/media/catalog/product but I can't find the image corresponding to the product because the URL obtained is a cached image and not the URL to the original image. Where are this product images stored in the directory structure under
/media/catalog/product. Is there any way to change them through the admin panel?