Does anyone know how to enter Blackreach after doing Elder Knowledge?I forgot the Lexicon in the dungeon and I need it to do Septimus's next quest for the Oghma Infinitium.I seriously don't want to go all the way back through the ruins to get there though, I hate Falmer so much.

Anyone?

Go back to where the dungeon is(stay on the surface). Find the tower you exited from, it should be the highest one and have an open gate on one side. Just go down the elevator that you took to get out and go get the lexicon.

That place was amazing. Like Lothlorien in LOTR.

Glad i'm not the only one who was dumb enough to walk off without the lexicon.

Did the same thing. Go to you map and around the area of the dungeon you entered, look for "Great Lift of " and go there to get back down. Unless you, like me, exited but didn't "discover" the lift. Luckily I knew about where it was on the map.