I have the follwoing Nginx configuration:

root /usr/share/nginx/files;

location / {
    #root /usr/share/nginx/files;
    autoindex on;
}

location /gallery {
    rewrite "^(/gallery)/[A-Za-z0-9]{8}/([0-9]{1,4}.jpg)$" $1/$2 break;
    autoindex on;
}

Directory gallery with images is located in /usr/share/nginx/files.
I would like to have one more location that will use images from gallery directory.

I’ve tried to do it in different ways:

location /new {
    rewrite "^/new/[A-Za-z0-9]{8}/([0-9]{1,4}.jpg)$" $document_root/gallery/$1 break;
    autoindex on;
}

But without luck. I get error message that such directory or file doesn’t exist.
Could you please advise what proper way to access directory with content using different locations?