Why are you so angry at the idea that Madeleine's remains may be buried somewhere in Luz?
For all I know Madeleine is buried in Luz.
Given that there are numerous large villas with 8 foot high walls, for all I know, Madeleine is alive and well and living in Luz.
The mound is an integral part of the one way system in Luz. From the west, ALL traffic gets told to head down 25 de Abril. From the south (Kelly's, Dolphin, Bull, Fernando's) the way to get North out of the one-way system is to take that stupid looking little road through the middle of the mound. It looks like a nothing little road. It's actually a key part of the one-way system.
´Posh' Italian restaurant Amici's (friends) opened in 2007. The Portuguese place next door opened around the same time. Both may, or may not, have been open (trading) on 3 May 2007.
It would appear that one Barrington Norton was kipping on the top of the mound that night.
It is nigh-well impossible to dig a Madeleine-sized grave here by hand. Basically, you need a power tool. Whether by hand or assisted by an engine, digging a Madeleine-sized grave is long and very loud.
So ... Madeleine went into a grave dug in the heart of Luz ... I would rate as being about a zero out of 10. Madeline went into some concrete being poured left, right and centre back in the day, quite possible, though I have no evidence whatsoever that this happened.