I captured this up at Jewel Lake in Rocky Mountain National Park last week. It was a 7 mile round trip hike that I would consider moderate. Lot's of almost level incline at a gentle 5 or 6% grade with maybe 2 stretches of a steeper 25% grade. It was well worth any sweat, as Jewel Lake is truly a jewel. 
This was at sunset, there was a hint of color in the clouds. It later got a little deeper colors in a few spots, but it was never nuclear. While I had passed dozens of people hiking up to the lake, at this point at sunset there was no one else left up there. I guess all of the sane people wanted to be back at their cars by the time it got dark.
I cropped this to a pano as I will be using this in a Travel Guide I filmed on that day and I am working on assembling that now.
All comments are welcome,
Jim
This was at sunset, there was a hint of color in the clouds. It later got a little deeper colors in a few spots, but it was never nuclear. While I had passed dozens of people hiking up to the lake, at this point at sunset there was no one else left up there. I guess all of the sane people wanted to be back at their cars by the time it got dark.
I cropped this to a pano as I will be using this in a Travel Guide I filmed on that day and I am working on assembling that now.
All comments are welcome,
Jim