Hi i got the walktrough, i come to the stones, find the north one, alaine radio's me and she tell's me to find the one that hase something carved on, in the walktrough it writes:
Aline will now radio you and talk you through the next section.
She will ask if something is carved in this stone.
Click on it.
Radio Aline back.

I click on the north stone, go in inventory and press use radio but it wont let me use it. Help plz!

press 'R' on your keyboard to activate radio, does not work through inventory, hope it works