Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks canｴt enter hiberheim realm

hello friends, iｴm stuck because i canｴt enter hiberheim realm to rescue the witch. I have the cultist spell needed to enter, but i donｴt know where i have to use it. I tried using it in the subterranean lake under the witch hut, but doesnｴt work. canｴt any of you help me?

You have to stand directly in front of the lake and read the scroll.
Then you need to click on the lake itself because it is the rift between realms.

a BIG thank you!! iｴve been lost for HOURS... i have even helped in hunterｴs edge anda ll before entering hiberheim LOL. i just entered wiith level 15