This is a 51 second exposure with ISO 400 24mm f/8.0 using a B+W 10-stop ND filter. It is titled "Its Roar Awoke the Sun" and was my first photo ever selected and featured on Google Chrome garnering over 32 million views.
It was one of the first shots I created that I felt could be considered World class.
The entire story behind the shot was published by me on Fstopper.com
https://fstoppers.com/originals/there-nothing-photographing-sunrise-part-2-169299