squizeers on "Get the large image of the gallery image"

I am using the following code to loop through the galley images in the post

<?php
$galleries = get_post_galleries_images( $post );
foreach( $galleries as $gallery ) {
 // Loop through each image in each gallery
 foreach( $gallery as $image ) {
  $image_list .= '<a href="'.'LINK TO LARGE IMAGE'.'"><img src="'. $image .'"/></a>';
 }
}
echo $content .= $image_list;
?>

How do I get the link to large image of the gallery image so that I can replace "LINK TO LARGE IMAGE" in the above code with it?

Any help is be much appreciated