Rangawahia Hall

On a backroad somewhere in the Manawatu area we found the Rangawahia Hall which is
about all that is left from a town that is no more. 
Laying along the edge of the building and dotted around the side were these tiles, obviously made by children, that tell some of the stories of the town's past.
Among hundreds of results about the hiking trails in the area, this article is all that I could find about them.