Ancient Tomb in Spain Destroyed and Replaced with a Picnic Table
npr.org
npr.org
Not every historical site is actually of any importance. I don't know much about this site, but I do know that there were literally thousands of nearly-identical archaeological sites in the area of Israel where I lived for a while. Not all of them were even excavated, and many times archaeologists would excavate a site, only to leave behind literally tonnes of artifacts lying in piles at the site. A historical site of value teaches us something about the people who lived there, but a bunch of identical clay amphorae made in the same style from the same clay, containing the same foods and wines, in houses constructed identically, don't teach us anything.
Stuff like the destruction of Palmyra (mentioned elsewhere in this thread) is a real tragedy. This, not so much.
We cannot preserve every tidbit our ancestors have left behind. But if a site has been settled since the neolithic times and there are artifacts remaining from those days it would be nice to leave a piece of history as a reminder of continuity and a personal connection to history. To me, while I appreciate academic knowledge, actually laying my hands on items carved and touched by previous generations creates a sense of connection that being merely cognitively aware of the facts cannot evoke.
The similar difference in looking at a picture of a fossil, and actually observing and touching one.
I have no idea of the density of historical relics in the area, though. And, yeah, I know, it's all in my head. But still.
http://www.nytimes.com/2015/08/24/world/middleeast/islamic-s...
http://www.businessinsider.com.au/isis-executed-the-top-arch...
Example: https://commons.wikimedia.org/wiki/Petr%C3%B3glifos_en_Galic...
Area of protection of the archaeological collection of petroglyphs in A somoz -> granted administrative permit for creating a feeedlot for pigs in the area
Some areas where just cleared for corrupt majors and petrogliphs ended in the local landfill "nobody knows why".
A Laxe do Cervo: the deer grabbed in stone vanished. It was unprotected and part of a path.
january-2015 A company is hired to clean an archeological park. Deletes an entire labyrinth with the chain of a tractor.
2013 "Coto de caza" (game preserve) painted over petrogliph
Lots of dissapeared stones and lots of "oups we deleted 4000 years art for mistake... again. How bad luck. Now lets build the new route over it, as planned"