Hi, since I see in the page of Ishigakure that it says Viz wrongly translated it, as I was going through the manga I saw they continue saying Iwagakure, so I went and checked the jp text. And they are correct, it is saying Iwagakure - http://www.imagebam.com/image/478b3b1085898424
It says: 石隠れ read as いわがくれ (iwagakure)
Checking the kanji for rock/stone - https://en.wiktionary.org/wiki/%E7%9F%B3 it indeed can be read as Ishi (in some cases), but also as Iwa (in other cases). And in this case it's read as Iwa. So we should be changing all Ishigakure to Iwagakure, as that is the name provided in the manga.