Regions (Cyrodiil)

It is the largest region of the continent, and most is endless jungle. Its center, the grassland of the Nibenay Valley, is enclosed by an equatorial rain forest and broken up by rivers. As one travels south along these rivers, the more subtropical it becomes, until finally the land gives way to the swamps of Argonia and the placid waters of the Topal Bay. The elevation rises gradually to the west and sharply to the north. Between its western coast and its central valley there are all manner of deciduous forest and mangroves, becoming sparser towards the ocean. The western coast is a wet-dry area, and from Rihad border to Anvil to the northernmost Valenwood villages forest fires are common in summer. There are a few major roads to the west, river paths to the north, and even a canopy tunnel to the Velothi Mountains, but most of Cyrodiil is a river-based society surrounded by jungle.

-- The Pocket Guide to the Empire, First Edition

A region is an area with unique weather patterns, terrain textures and assets, flora, environmental soundboard, and often a specific creature profile (and associated danger level). Certain areas are also associated with particular types of architecture. Note that regions, while important, rarely coincide with political borders and do not always feature a unique culture or ecology.

https://docs.google.com/document/d/10iag58gzBJCbLT2USdfBXSc9PQFx9G8kwUQFOopRk8w/edit?usp=sharing

• Stirk Isle
• Abecean Sea
• Gold Coast
• Gilded Hills
• Kvetchi Pass
• Dasek Mire
• West Weald
• Colovian Highlands
• Barrowlands
• Mor's Ambit
• Massiqueran Forest
• Ruma Floodlands
• Barrens
• Jerall Mountains
• Etiolatum
• Heartlands
• Demergatur
• Serican Jungle
• Kavas Rim
• Valus Mountains
• Niben Sester
• Niben Destra
• Valley of Altars
• Marshes of Mir
• Shipal-Shin
• Tertius Orma
• Blackwood
• Kotherra Mangroves
• Molaquin Ren
• Topal Bay