Yep, appears to be? Doing some searching & nobody knows the location, including the Church who ran it! https://www.abc.net.au/news/2017-11-30/final-resting-place-of-19-children-who-died-in-mackay-orphanage/9205194. From this though: http://www.mackayhistory.org/research/cemeteries/orphanage.html "The orphanage buildings were situated on a low sandy ridge separated from the sea in front by a strip of forest and closely surrounded on all other three sides by a large swamp", I'd take a guess that that was on the ground where Bucasia Gardens are along the road frontage, but "There are no headstones to mark these burials or is there an indication of where the burial ground was". I'd say this node was just a best guess a where it may have been, so should probably be deleted. You happy with that?