Nature trail wiki/mobile app idea

Hi folks. I posted this on the FB group just now. Not sure how best to reach the WE community these days.

What do you think of a wiki-based mobile app for nature
trails? An educator could establish a trail using a mobile
phone/camera/GPS. Others could follow the trail and the content would
pop up when you approached a location…with a photo to overlay on the
landscape (like PokemanGo but with reality…augmenting reality).
Content would live on Wikieducator and be pulled up and down to the
mobile app.

The technology could be applied to any sort of trail…from pub crawl to historical trails to geocaching.