Because the remains in Spain stay mainly on the plains.

Here's a longer article with more info.
http://www.bbc.co.uk/news/world-europe-31852032

Why??? Why did they disturb this grave? I am not famous. Glad to know that I will be allowed to "Rest in Peace".

Actually, I have decided to be cremated....it is cheaper, does not take up much space and no one needs to responsible for maintaining a cemetery lot.

One holds Cervantes' remains along with family members all intermingled.

For most "great men" there's a tendency to want to have a marked grave for those who want to pay respects, build monuments, that sort of thing.

But otherwise they're just bones and scraps of remains. They were rotting where they were. (I'm not one of those who particularly cares what happens. Disturbed, not disturbed; cremated, fed to vultures, recycled as fertilizer ...)

and move him and his family to the site they are now excavating. So they have been looking for him for a long time. One of the searchers indicated that once his is identified they will rebury him with his family where he originally asked to be buried.

Now that they found the plot!

And there were many, many really good scenes in Man of La Mancha. The creators were geniuses. (That includes Cervantes, from whom all Don Quiote stories flow.)

Fascist Regime would allow the anthropologist to find the remains of the poet and writer, Federico Garcia Lorca, who was killed by the Franco government in 1936 probably for being Gay more than for his political ideas. The current government does not want his remains found.