Nehrim: At Fate's Edge

Nehrim: At Fate's Edge (the predecessor of Enderal: Forgotten Stories) is a total conversion for TES IV: Oblivion. Explore the eponymous land of Nehrim and its dense forests and deserts, delve into ancient crypts and labyrinthine caves, and experience an unconventional, gripping storyline that unfolds beyond known patterns of good and evil.

How extensive is the world space and how has it been created?
The land mass approximately equals the one of Oblivion. However, in Nehrim the landscape is entirely hand-built and thus has a lot more variety in it than those forests in Oblivion.

How long