I put this in the spoiler/cheat section so that newbies dont get offended(and solitude guards too) by the spoilers i post.

Basically, i m RPing as a well, adventurer. With a team of 4 expedition people(UFO), i decided to investigate this socalled mysterious Blackreach. However, i need some help.

1. Assuming i never met septimus, or did the MQ/Dawnguard questline, how did my character find out about blackreach? Is there a book written by someone who talks about blackreach?

2. Like i said, assuming i never knew septimus or did any MQ/DG questline, and somehow i found the way to blackreach from radhtbar(whatever it is called), is there any other way to enter into blackreach besides getting septimus' lexicon thingy? From what i know, you need a tool to open the gate thingy.

I brought a tent, 7 day food supplies, and have all the realism mods. So it will be a big week for me and the followers. I just need these 2 questions solved.