Hi Rick,
Welcome to the CiC forums from me, great to have you join us.
These are pleasing compositions, but I agree with Binnur, Dan and Otávio. Dan has covered the reasons why in most detail.
My suggestion would be to post larger images, using the TinyPic method in the "Go Advanced", which will allow up to 1000 px tall and 1600 px wide. Small images for landscape subjects are particularly disappointing.
Can I also ask you give us an idea of:
what software you have for Post Processing (PP) and how skilled you might describe yourself in using it?
whether you shoot RAW or jpg and what camera you use?
I think you might be able to do something with these in PP, but it would require selective white balance adjustments and use of levels or curves and trying some Local Contrast Enhancement (LCE), although the better option, since you are lucky enough to be able to visit it easily, might be to return when the sunlight is more 'co-operative' - coming from a good angle.
Thanks,