On March 23, 893, a massive earthquake took thousands of lives. It was actually considered a 'mistaken' earthquake based on misreadings of the original Armenian sources. The night before the major earthquake was a lunar eclipse but after the earthquake it was considered to be a solar eclipse.
People say before the earthquake, waters were drying and ground vibrations were felt. This is ranked as the 8th worst earthquake because it destroyed Ardabil and all the lives that were taken.
After the earthquake, it was estimated almost 150,000 total deaths. This was the biggest earthquake that occurred in a long time. This are has had earthquakes before but this was certainly the deadliest. Ardabil was actually reconstructed somewhere nearby the original Ardabil