Yes, I've used them plenty, but just for work (I'm a mapper). I'd come across these maps in my work as a landman from time to time...unfortunatley I can't really use them due to eye issues (can't see 3D easily). The attempt to use them was for identifying elevation/terrain issues for running NG pipe, locations for rigs etc. Others had decent success with them.
The way it works is you have two images with that sit side by side...you have a viewer with two lenses (one for each eye)...you place the viewer over the images- look through the lenses and the brain combines the images into one 3D image.
You might find a few that would use them but I think now days people want the info to come from their phone. So, they'd just end up using an aerial with a topo overlay.
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