First Age 53
From Tolkien Gateway
First Age 53 (abbreviated to F.A. 53) is the 53rd year of the Sun of the First Age of Middle-earth.
Notable events in this year include:
- With the help of Ulmo, Turgon travels up the Sirion and discovers the hidden valley of Tumladen. He plans to create the city of Gondolin, a city similar to Tirion upon Túna.[1]