Thanks for all the comments guys. The last is also my favorite - I like the curve of the river leading in. It took a lot of work to control contrast. I shot an HDR set, but wasn't happy with processing it. In the end I used an under exposed shot, so the sky wasn't blown out, then recovered the shadows with masking. The dynamic range on my A7cr is amazing!
Last one the clouds look like waves crashing over the mountains. Really a spectacular image.
I'm a big fan of the first one too Jim, love the diagonal and richness of the tones, sweet blacks!