 More recently, the Kaurna Aborigines lived on two camp sites dating back 2,000 years and their middens contain shellfish remains and the otoliths (earstones) of Mulloway.Smaller camps have been found on the cliff edge which are believed to have been used by watchers waiting for migrating shoals of Mulloway.Stone implements were first discovered in Hallett Cove in 1934 with more than 1,700 artefacts being collected over a period of 30 years.