OpenStreetMap
"UAV could map archeological sites in a fraction of the time currently required"
Air a phostadh le mapryan 8 An Lùnastal 2012 sa chànan EnglishOne of these could be really useful for all those areas with no or poor satellite imagery coverage http://www.gizmag.com/suave-archeological-aerial-mapping/23626/?utm_source=Gizmag+Subscribers&utm_campaign=7f35e162ad-UA-2235360-4&utm_medium=email
Discussion
Beachd le Pink Duck 8 An Lùnastal 2012 aig 13:56
Presuming the cost is less than that of purchasing satellite imagery.
Beachd le mapryan 8 An Lùnastal 2012 aig 20:48
True
Beachd le CloCkWeRX 14 An t-Iuchar 2013 aig 08:36
https://www.youtube.com/watch?v=n1E_CPxR3LA is probably quite interesting for you