We’ll never know for sure the exact size of the iceberg that sunk the Titanic. However early newspaper estimates said that it was 50-100 feet tall and 200-400 feet long. The ship laid to rest 13 nautical miles from where it struck the iceberg.
The MINIA was the first ship to reach the disaster scene. They found debris and bodies floating in the area near the iceberg photographed. That is why this iceberg is thought to be the one that struck the Titanic and sunk it.