The earthquake was recorded by the witnesses.
Social media posts from users in Turkey and Syria show the full scope of the devastation caused.
The sheer scale of the devastation of the earthquake and its aftershocks can be seen in social media photos and videos posted by people in Turkey and Syria. Eyewitnesses have also been speaking about what happened. BBC News has been pulling together and verifying information.
Erdem, a resident of the city of Gaziantep, claimed, “I have never felt anything like it in the 40 years I’ve lived. At least three times, we experienced “extremely powerful shaking, like a baby in a crib.”
Using eyewitness accounts and confirmed social media posts.
A camera moves past smoke-filled sights of ruin and devastation in Iskenderun, southern Turkey, in one verified tweet.
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Twitter original tweet seen
All the earthquake survivors whose stories were told to BBC Turkish from various cities said they had never before experienced tremors this strong and persistent.
To the north of the epicentre, in Kahramanmaraş’s Pazarck area, hundreds of structures are said to have been damaged.