WordPress NextGEN loop through images from specific album

Answering the question with zvinxs solution:

global $nggdb;
$gallery = $nggdb->get_gallery(8, 'sortorder', 'ASC', true, 0, 0);
foreach($gallery as $image) {
    echo $image->imageURL;
    echo $image->alttext;
    echo $image->description;
 }