Print image field with multiple entries from field in twig template
Print the image field in the node template like any other field:

{{ content.field_gallery_images }}


And then use a field twig to loop through multiple field items: 

field--field-gallery-images.html.twig

&lt;div class="row expanded"&gt;
  {% for item in items %}
    &lt;div class="gallery-image-item"&gt;{{ item.content }}&lt;/div&gt;
  {% endfor %}
&lt;/div&gt;