There is the Tirtha called Aksayavata, celebrated all over the three worlds. Whatever is offered there to the Pitris is said to become inexhaustible.
तत्राक्षयवटो नाम त्रिषु लोकेषु विश्रुतः। तत्र दत्तं पितृभ्यस्तु भवत्यक्षयमुच्यते॥