How would I list assets from a specific subfolder? In the case that I have an asset folder structure like this:

/images
   /group-a
   /group-b
   /group-c


How would I loop through all of the images in /group-b without having to assign them to entries.
You could use the folderId-parameter in craft.assets:

{% for image in craft.assets.folderId(1) %}
    &lt;li&gt;&lt;img src="{{ image.getUrl('thumb') }}" alt="{{ image.title }}"&gt;&lt;/li&gt;
{% endfor %}


You can get the folderId by inspecting the folder-name in the CP.