I'm writing a text and I want to say that "the windows cannot be climbed".
Is this all right? I'm honestly not sure even what is the name of this form. Where can I learn more about it?
Edit: probably "klettern" is the wrong verb here. I'll give some context. The action happens in a bouldering hall with windows and you are not supposed to climb through the window and go outside (you shouldn't). The windows are at the height of a human person's head.