In March 2015, the Iraqi tourism ministry reported that militants had used bulldozers and other heavy vehicles to vandalise the site.

To vandalise a well-worn election slogan - it tells us that Stronger In's referendum strategy is sticking with three priorities: The economy, the economy, the economy.

It is sometimes done with the owners' permission, but not always, although urban explorers insist they never steal, damage or vandalise anything.