Geosynced DEMs prepped to feed into microwave link design software can cost a lot of money. I knew one engineer who was sent up in a special plane they found j

Geosynced DEMs prepped to feed into microwave link design software can cost a lot of money. I knew one engineer who was sent up in a special plane they found just to photograph a remote region and then he matched the elevation data by hand for all the routes. I don't know what the non commercial uses are for this data but I suspect it would be otherwise prohibitively expensive without the CC4.0 license so I am happy for whomever it benefits.