Short answers, pulled from the story.
Yerawada Central Jail is a high-security prison in Yerwada, Pune, in the state of Maharashtra, India. Built by the British in 1871, it spans 512 acres and is the largest prison in Maharashtra and one of the largest in South Asia, housing over 5,000 prisoners as of 2017.
Yes, Mahatma Gandhi was imprisoned at Yerawada Central Jail multiple times during India's freedom struggle, notably in 1932 and again in 1942 during the Quit India movement. During his 1932 imprisonment, he signed the Poona Pact with Dr. Ambedkar inside the jail on the 24th of September 1932, ending his indefinite fast against the Communal Award.
The Poona Pact is an agreement signed on the 24th of September 1932 between Mahatma Gandhi and Dr. Ambedkar, the leader of the depressed classes, inside Yerawada Central Jail. Gandhi signed it to end an indefinite fast he had begun on the 20th of September 1932, protesting the Communal Award for depressed classes.
During the Emergency era of 1975-77, Yerawada Central Jail held several political opponents of Indira Gandhi, including RSS chief Balasaheb Deoras, Atal Bihari Vajpayee, Pramila Dandavate, and Vasant Nargolkar.
Ajmal Kasab, a perpetrator of the 26/11 Mumbai terror attacks, was hanged and buried at Yerawada Central Jail on the 21st of November 2012. He had been jailed there since 2008.
Yerawada runs a Gandhian principles course introduced in 2002 by Asim Sarode of Sahyog Trust, in which inmates study for one year and sit an examination. The prison operates its own textile mill where around 150 inmates produce nearly 5,000 garments daily for distribution to jails across Maharashtra. In 2007, inmates planted 8,500 sandalwood saplings within the compound.