Turkey-Syria earthquake: Images show scenes before and after disaster
The level of destruction caused by a 7.8 magnitude earthquake in Turkey is strikingly clear in this series of before and after images.
The earthquake hit in the town of Pazarcik, Kahramanmaras province, in the early hours of Monday morning.
Residences, shops and places of worship collapsed as more earthquakes and aftershocks continued to rock the region.
Thousands killed and more injured - earthquake latest updates
Move the white bar left and right on the images below to see how badly places were affected.
Historic buildings such as the Roman-era Gaziantep Castle were badly damaged. It had previously been regarded as one of the best-preserved buildings of its kind in the country, but now huge parts of the ancient structure have crumbled.
It is located in the city of Gaziantep which is only around 35 miles from the epicentre of the earthquake.
Key infrastructure was also hit. Parts of the Hatay Antakya Academy Hospital near the Syrian border turned to rubble during the natural disaster.
Whole streets have been transformed into scenes of destruction.
Residential buildings and shops along this major road in Kahramanmaras were destroyed.
One modern hotel in Malatya collapsed while other buildings in the vicinity remained standing.
Nearly 3,000 people have died and thousands more have been injured across wide swaths of Turkey and neighbouring Syria, with fears the number of casualties will continue to rise.
While Turkey is in one of the world's most active areas for earthquakes, Monday's seismic activity has resulted in what the country's president has said is the worst disaster to hit the region in decades.
Rescue services have been digging through rubble, metal and concrete for survivors since the first earthquake struck.
Desperate relatives and friends of victims have been posting locations where extra help is needed to rescue those who are trapped underneath collapsed buildings.
Others commenting on social media in Turkish are speculating whether poor construction materials and practices have contributed to how many buildings have been destroyed during this disaster.
Syria's White Helmets rescue group has been sharing footage of their attempts to rescue those buried under rubble across the border.
The group operates in rebel-controlled areas of north-western Syria, an area home to around four million people displaced from other parts of the country by civil war.
Many of the residents live in buildings already wrecked from past bombardments, with the White Helmets commenting that now hundreds of families are trapped in rubble.
With thick cloud covering the region as seen in this satellite image, rescue efforts have also been hampered by poor weather conditions, including rain and snow on the ground in some areas. Heavy thunderstorms, severe winds and snow are forecast in the coming days.
Official offers of help from countries around the world, as well as support from charities and aid organisations, have been extended to both Turkey and Syria as their citizens grapple with this disaster.
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