In southeastern Australia, a unique area called The Potholes has over 100 caves formed by rising groundwater beneath a river. The caves are concentrated in a small area due to the limestone bed's specific shape and location. Unlike most caves worldwide, these caves fed multiple resurgences instead of just one. The cave formation likely started in the mid-Cretaceous and ended in the mid-Pliocene due to geological changes. This study shows how the arrangement of limestone beds can determine the development of caves over millions of years.