Manual blend of 2 exposures. The long exposure is made possible by the use of a ND400 filter. I have shot many variations of this composition before. Those mountains are just wonderful when light hits them.
Single 126 second exposure shot with a 10 stop ND filter. Normal, under-exposed and over-exposed versions of the sam raw file were converted and then blended together to control the dynamic range. I used Tony Kuyper luminosity masks to control contrast.