I found this excerpt from a book while I was researching Alex's post on the Endolymphatic Sac "Clip". The excerpt explains and illustrates the shunt procedure. https://www.inkling.com/read/otologic-surgery-brackmann-shelton-arriaga-3rd/chapter-34/chapter34-reader-5
Well, it let's you go 'so far' and you have to sign in with Facebook and they want to sell you the book it seems. It goes into great medical terminology detail---but was interesting as far as I could go. I had the surgery in 2012. No more vertigo after the first week or so, but am dealing with daily head pressure and imbalance that is mild but very annoying. The head pressure/dizzy feeling is the most troubling as it also causes headaches from time to time and daily nausea--mild to not so mild. The good thing--the 'vertigo is gone'!!