Thanks for inviting the Inca Dwarf artwork of mine. I've got a whole ongoing series of Dwarven cultures from across the world which might help you fill out this section:
www.deviantart.com/dwarvenhall…Germanic, Celtic, Celtiberian, Dacian, Nabatean, Inca, Moche, Ethiopian, Akha, Udmurt, Inuit, Rapa Nui, Korean Gaya Confederacy, Hittite...
The list goes on:
www.deviantart.com/karaknorncl…I advise you to grab 'em all for Dwarven Halls.

And please do check out Sergio Artigas' fantastic artworks to fill out that section as well. He's got e.g. Ethiopian and Mesopotamian Dwarves.
Cheers