Heartside

Heartside is Bezu's broiling under-layer, where Bezu's pipes create massive tunnel networks under the sea and ground. There are vast cities Heartside, as well as the occasional subterranean geological phenomena. This close to the heart of Bezu, the magic channeling through the pipes is unpredictable and dangerous, and so it's ill-advised to wander far from population centers without a guide.

Besides the officious city governments, Heartside as a collective is overseen by the Council of Groundswell, a broad network of dwarven ambassadors and architects who prune the vents so as to best mitigate the side effects of their growth. Because the tunnels can be dangerous, most Wavesiders and Ventsiders tend not to venture Heartside without an invitation.

Inhabitants

Dwarves and orcs are both native to Heartside.

Dwarves control most Heartside cities. Because their society is very carefully stratified, it's uncommon to find them wandering elsewhere except in planned groups.

Orcs are historically nomadic, and have a talent for safely navigating the pipes. However, most of the orcish population now lives Waveside.