OpenStreetMap
"UAV could map archeological sites in a fraction of the time currently required"
mapryan erabiltzaileak 8 Abuztua 2012 datan argitaratua English hizkuntzanOne 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
Eztabaida
Pink Duck erabiltzailearen iruzkina 8 Abuztua 2012 13:56-eann
Presuming the cost is less than that of purchasing satellite imagery.
mapryan erabiltzailearen iruzkina 8 Abuztua 2012 20:48-eann
True
CloCkWeRX erabiltzailearen iruzkina 14 Uztaila 2013 08:36-eann
https://www.youtube.com/watch?v=n1E_CPxR3LA is probably quite interesting for you