The title really does fit the image. I get a feeling of mass and dominance. I like the tones and contrast between the soft moody clouds to the rough textures and terrain. Very nice image!
Your choice of subject is excellent for this challenge. The mono conversion was done well. The composition is a little off, with the horizon in the middle of the photo. You should try it next time with the horizon on the lower third line. The image looks a little soft overall all too, which should be able to be fixed with USM.
Well executed, though the shadows seem to have lost a lot of detail (probably mostly due to the contest restrictions on submissions). I like the composition, and B&W seems to work well. Not sure it screams "science" to me, though.