Antrum

an·trum (/ˈantrəm/) noun. a natural chamber or cavity in a bone or other anatomical structure. Antrum is a city of decadence and corruption, carved out of the hollow bone of some long-dead God. For decades the citizens of Antrum have lived in relative peace, interrupted only occasionally by violence. Smashing some skulls or tossing a vagrant to the spineflowers was required to maintain order. But …