This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.
Mannum Baptist Church was built in circa 1893. Built from pointed random limestone rubble the building sits on the top of the cliff overlooking the river. The simple building became a community church. After private sale in 2018 it has been transformed into a contemporary two-bedroom home. No Foundation Stone or Memorial Plaque details are known.
To find the cache complete the Wherigo cartridge found here (username and password is the same as you use on www.geocaching.com).