Dia-Dia

Dia-Dia is a mountain range located in the northern polar region of Cantera (ancient) or Win Wenada (modern). In modern times, it is more commonly called the Northern Highlands. The name is an onomatopoeia for the 'sparkling' sound given off by diamonds in sunlight, owing to its icy cliffs and valleys that had a diamond-like appearance.

Dia-Dia is significant for being the location of Toh Batt Dair, as well as being the birthplace of Den and Rane.