Gadzira shanduro yakaoma zvikuru yemutsara uyu Iyo yakaumbwa mukati mezvikamu zvinoverengeka zvequaternary glaciation apo mwero wegungwa wakanga wakaderera zvikuru.
Chokwadika, shanduro yakaoma kunzwisisa zvikuru yemutsara wacho ndeiyi "Yakaumbwa mukati menhambo dzinoverengeka dzequaternary glaciation apo mwero wegungwa wakanga wakaderera zvikuru - kunzvera kwama stalactites akawanwa muGreat Blue Hole kunoratidza kuti kuumbwa kwakaitika makore 153 000, 66 000, 60 000, uye 15 000 akapfuura".