[7] The settlement process in the Upper North of South Australia is an intriguing case study of the economic and social changes brought about by land reform legislation in the 1860s.

[8] Coomooroo lies just north of Goyder's Line, which marks the boundary of land suitable for cropping due to rainfall levels.

North of Goyder's Line, the annual rainfall is generally insufficient to support crops, limiting the land to grazing purposes.

As early as 1876, the South Australian Register reported on the challenges faced by settlers in Coomooroo due to unfavorable weather conditions.

[15] The historic Pekina Run Ruins, located at the south-eastern tip of Coomooroo, are listed on the South Australian Heritage Register.