These are a few examples of registered structures, designated as "purpose built" by archaeologists, which were mapped by position, described and recorded for posterity. The information derived was considered so sensitive that it was then labelled "restricted" and not to be viewed by the general public until the year 2063. (Celtic NZ)
The deep, fissure marks on this boulder were done by stone tools. It might be that the grooves are the result of adze sharpening and fashioning. There are many such incised boulders in the forest and they might represent some form of pictograph.
