Thank you all for the kind comments!
@ golunvolo, yes, it is from a single exposure of f/16 at 1/13 sec iso 200. The sun rays could have been sharper but my travel tripod is not heavy, wind was blowing so I turned on the VR feature of the lens. I think the rendition of the sun rays the way they are, is caused by VR anomaly. I did bracket my shot but I am not an HDR fan so I picked the one that approximates what I saw on the original scene.
Below is the ViewNX screen shot of the original NEF file. It can be seen that shadows needed to be opened, contrast added to the foreground, some cloning of the flare, burning/dodging of the horizon to reveal the clouds, a little bit of desaturation of yellow/burning the rim of the sun and the sun rays are pretty much what I did: