On the night of 14–15 April 1912 in the North Atlantic, the passenger liner Titanic collided with an iceberg and sank. There were investigations into the iceberg and the fatal damage the collision caused to the supposedly unsinkable ship. The most important sources about the iceberg are reports from surviving crew and passengers of Titanic. Photographs were taken of icebergs near the spot where Titanic's lifeboats were found, and it is purportedly visible in one of these photos.