As per the passage, Vinayak Damodar Savarkar was kept in prison by the British at:

Vinayak Damodar Savarkar is known to be an ardent nationalist, revolutionary and a noted freedom fighter of India. He is regarded as the inspirational force behind the resurgence of Hindu nationalism in India. Veer Savarkar was kept as a prisoner at the Andamans by the British. Savarkar's concept of Hindutva was comprehensive. For him, Hindutva implied not only the religious tenets of the Hindus but also comprehended the cultural, social, political and linguistic aspects of their life. In his seminal work Hindutva (1923), Savarkar asserted: 'A Hindu means a person who regards this land of Bharatvarsha, from the Indus to the seas, as his fatherland as well as his Holyland, that is the cradle land of his religion.' In his Presidential address to the Hindu Mahasabha at Ahmadabad (1937), Savarkar observed that the Hindus possess a common Holyland. The Vedic Rishis are their common pride, their grammarians Panini and Patanjali, their poets Bhavabhooti and Kalidas, their heroes Shri Ram and Sri Krishna, Shivaji and Pratap, Guru Govind and Banda Bahadur are a common source of inspiration. Their prophets Buddha and Mahaveer, Kanad and Shankar, are held in common esteem. All tests whatsoever of a common country, race, religion and language that go to entitle a people to form a nation entitle the Hindus with greater emphasis to that claim. Savarkar was a powerful writer and orator. Some of his most important works include: An Echo from Andamans, Hindu Pad-Padshahi and The Indian War of Independence.