The subject of a Beatles song is among the many foreign pilgrims visiting India's Kumbh Mela festival.
Prudence Farrow, about whom John Lennon wrote the song Dear Prudence, is also sister of Hollywood actor Mia Farrow.
The Kumbh Mela, which is held every 12 years, is billed as the world's biggest gathering of humanity.
Millions of Hindu ascetics and pilgrims take a dip at Sangam, the confluence of the Ganges and Yamuna rivers in Allahabad city.
Ms Farrow says she waited for four decades to come to the Kumbh Mela.
She had first visited India in 1968 as a student of meditation and met the Beatles at Indian guru Maharishi Mahesh Yogi's retreat in Rishikesh.
"I wanted to come to the Kumbh with the Maharishi, but that never happened," she told the BBC. Her guru died in 2008.
This year Ms Farrow finally made it to the Kumbh Mela with her husband Albert Bruns.
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