We have already covered the Thangorodrim. The mountain range they belong to is really enormous - it stretches far to the east and is connected to the Orocarni - and the Beleriand part of it should look, well, lacking a better word, Evil. This is where Maedhros hangs by a chain and sees the Sun rise.
Can anybody see Maedhros?
Can anybody see Maedhros?