I think its right: actually, it's just 147yds/137m away from the LINZ-location (see http://www.linz.govt.nz/apps/placenames/index.html), and the placemark marks something grey with things on it that look like branches, just like a giant tree that is taller than all the other trees around.

On the internet, I couldn't find a local map of Waipoua forest's hiking trails to create an overlay. Maybe you have one or know where to find?
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If you have information that is not in the description of my posted placemark, please let me know so that I can update it. I've searched all forums for this topic but I didn't find anything. Please contact me if I've overseen something and posted a duplicate placemark.