Pinjarra Massacre Site On 28 October 1834, the Battle of Pinjarra took place in the Swan River Colony in present-day Pinjarra, Western Australia. Between 14–40 Aborigines were killed by British colonists. The Pinjarra massacre, also known as the Battle of Pinjarra, occurred on 28 October 1834 at Pinjarra, Western Australia when a group of Binjareb Noongar people were attacked by a … Continue reading On this day (Australia): In 1834, up to 40 Aborigines were killed by British colonists at the Battle of Pinjarra in the Swan River Colony