Mushroom Kingdom of Umber

From Introduction: Beyond the Way Stone the steppe continues, flat, tasteless, tone-deaf. The caravan trails have carved a route down to the bedrock and the long-dry gully buttresses of gently crumbling livingstone attest to the long-lost land of Umber, once rich from local deposits of titanic biomatter which supported a thriving chitin-cap agro-industrial aristocracy.