It looks like you're working on a draft title or chapter heading that blends a few iconic Tolkien elements. "The Shadow of the Past" is actually the title of of The Fellowship of the Ring , where Gandalf explains the true nature of the Ring to Frodo.
If you're writing about a dark or "shadowy" location, this is a top candidate. It's a bitter, inland sea in southern Mordor where Sauron kept slaves to farm crops for his armies. A Shadow of the PastThe Lord of the Rings : Sea...
It features prominently in the video game Middle-earth: Shadow of Mordor , making it a popular choice for fan projects or new stories set in that era. 2. The Sea of Rhûn (The East) It looks like you're working on a draft
Are you writing a about Mordor, or were you looking for a specific chapter or game level ? LotR Reread: The Shadow of the Past - Stewartry It's a bitter, inland sea in southern Mordor