What is the significance of pitru loka in Hindu mythology and how does it relate to the concept of ancestral worship?

In Hindu mythology, Pitru Loka is the realm of the ancestors where the souls of deceased ancestors reside. It is believed that honoring and worshiping one's ancestors, known as Pitru Paksha, can bring blessings and protection from negative influences. This practice is a way to show respect and gratitude towards one's lineage and to seek their guidance and blessings for the present and future generations.