I am not really sure what to call this, so for right now I am just calling it a carpet stamp. But really it's an indentation that was made by some sturdy iron railing fixed on to my living room floor. I guess it's the same thing as if you had a piece of furniture sitting on your carpet for ages and it made a really deep indentation.
Is there any way I can fix this area of carpet? I'd like to get it elevated back to the same height as the rest of the carpet.