Filipino boys living on top of multi-layered tombs come down a ladder at a public cemetery in Navotas, north of Manila, Philippines on Thursday Oct. 31, 2013.

A cemetery worker breaks the wall of a graveyard in order to exhume a corpse at the main cemetery in Guatemala City, Tuesday, April 24, 2007. Forensic anthropologists from Guatemala are studying some 2500 corpses to create a database adjusted to the physical characteristics of the Guatemalan population. The bodies used for the study belonged to individuals whose relatives have not paid the cemetery fees for at least the last ten years. (AP Photo/Rodrigo Abd)

A man crosses a foot bridge to spruce up the tomb of the departed loved one as children living on top of dilapidated tombs while away their time at a public cemetery at Navotas north of Manila Tuesday Oct. 31, 2006.

Children living inside a public cemetery compound play on top of “apartment type” cemeteries at Navotas north of Manila, Philippines, Tuesday, Oct. 31, 2006.

An exhumed corpse lays at the main cemetery in Guatemala City, Tuesday, May 8, 2007. Forensic anthropologists from Guatemala are studying some 2500 corpses to create a database adjusted to the physical characteristics of the Guatemalan population. The bodies used for the study belonged to individuals whose relatives have not paid the cemetery fees for at least the last ten years. (AP Photo/Rodrigo Abd)

Two teenage girls, residents of the 25th Commune, a cemetery-turned-garbage dump in Kinshasa, Congo, walk through piles of trash Friday Aug. 4, 2006. It is home for street children and homeless people living in carcasses of rusting cars. Aid workers say that many street children earn a living through prostitution. (AP Photo/Jerome Delay)

This Oct. 10, 2014, photo shows a general view of cemeteries located in the City of the Dead, a slum where half a million people live among tombs, in Cairo. The reality of relying on finite land resources to cope with the endless stream of the dying has brought about creative solutions. (AP Photo/Hassan Ammar)

In this Oct. 15, 2014 aerial photo, cars drive past cemeteries in New Orleans. Due to the high water table of New Orleans, which is just below sea level, water fills a grave as soon as it is dug. Historically, most graves in New Orleans are above ground if they are not concrete reinforced, lest the bodies are pushed to the surface by the water. (AP Photo/Gerald Herbert)

mall cubby hole memorials, loaded with keepsakes and photos honoring dead pets, are seen at the Merciful Pets Paradise on the traditional Chinese festival of Tomb Sweeping Day, Wednesday, April 5, 2006, in Taipei county, Taiwan. When many Taiwanese crowded countryside cemeteries to honor their ancestors and clean their grave site, many others marked the traditional tomb-sweeping festival Wednesday by paying visits to their dead pets. At Merciful Pets Paradise in suburban Sanhsia, Taipei County, people burned incense and stacks of paper money for their dead dogs, cats, parrots and other animals before their urns housed in small cubby holes. (AP Photo/Wally Santana)

In this Oct. 13, 2014 photo, buses drive on a motorway over the Montmartre cemetery in Paris. Cemetery overcrowding is an issue that resonates around the world, particularly in its most cramped cities and among religions that forbid or discourage cremation. The reality of relying on finite land resources to cope with the endless stream of the dying has brought about creative solutions. (AP Photo/Jacques Brinon)

is Oct. 13, 2014 photo, an employee at the Necropole Ecumenica Memorial cleans the surface of crypts in Santos, Brazil. When completed, the five building memorial known as a vertical cemetery will hold 180,000 bodies. (AP Photo/Andre Penner)

This Oct. 6, 2014, photo shows a new vertical part of the Yarkon cemetery outside of the city of Petah Tikva, Israel. With real estate at a premium, Israel is at the forefront of a global movement building vertical cemeteries in densely populated countries. The reality of relying on finite land resources to cope with the endless stream of the dying has brought about creative solutions. (AP Photo/Dan Balilty)

This Monday, Oct. 6, 2014 photo shows a new vertical part of the Yarkon cemetery outside of the city of Petah Tikva, Israel. Cemetery overcrowding is an issue that resonates the world over, particularly in its most cramped cities and among religions that forbid or discourage cremation. After some initial hesitations, and rabbinical rulings that made the practice kosher, Israel’s ultra-Orthodox burial societies have embraced the concept as the most effective Jewish practice in an era when most of the cemeteries in major population centers are packed full. (AP Photo/Dan Balilty)

This Oct. 14, 2014, photo shows hundreds of graves at the overcrowded Bashoura cemetery for Muslim Sunnis in Beirut, Lebanon. The congested city of more than one million is cramped with cemeteries wedged into residential areas, increasingly forcing families to bury several members of the same family in one grave. Available land plots are extremely scarce and what is left is being used by developers to build luxury office towers and apartments. (AP Photo/Hussein Malla)

In this Oct. 14, 2014, photo, a Lebanese man, center, walks between graves at the overcrowded Bashoura cemetery for Muslim Sunnis in Beirut, Lebanon. The congested city of more than one million is cramped with cemeteries wedged into residential areas, increasingly forcing families to bury several members of the same family in one grave. Available land plots are extremely scarce and what is left is being used by developers to build luxury officers towers and apartments. (AP Photo/Hussein Malla)

In this Oct. 15, 2014 photo, a woman carries flowers through the Nueva Esperanza cemetery in the Villa Maria shantytown in Lima, Peru. The reality of relying on finite land resources to cope with the endless stream of the dying has brought about creative solutions. (AP Photo/Martin Mejia)