Coolibar is a family business, run by Brian and Rosalie Calderwood and is situated 20km south of Tumby Bay, South Australia on the Lincoln Highway.

The property with a soil base of loam over clay is run as a sheep and cropping enterprise and receives an annual rainfall of approximately 400mm.

Currently 900 Merino & Dohne ewes are mated annually to Dohne Merino Sires'