Hi all, how would you tag whether an archaeological site is visible on satellite images?
Sardinia has several 1,000 large megalithic stone towers (nuraghe), about 600 of which are in OSM. However, they have different states of preservation. Some are clearly visible on the satellite image (with extensive structures present), but others aren't (and there probably isn't much remaining). This doesn't necessarily indicate their preservation - some are covered by forest. So a tag like "preservation" may not be easy to add unless you do a ground survey. However, I'd like to add something like "visibility", indicating whether the site is clearly visible from a satellite image (and may thus be worth visiting). What do you think? What tag should I use? Bjoern
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