What is the role of the Alaknanda River during Pind Daan at Brahmakapal?

The Alaknanda River is integral to the sanctity of Pind Daan at Brahmakapal. Originating near Badrinath, its waters are considered holy and purifying. Taking a dip cleanses the devotee before the ritual. Water from the Alaknanda is used in the Pind Daan ceremony itself (for mixing Pindas, for Tarpan). Offering the Pindas into the flowing Alaknanda after the ritual is a common practice, symbolizing the final release and journey of the ancestors.