Kodak Portra color that is.
I have a collection of images made at Mammoth Springs and Yellowstone falls.
With bracketing there are six images on this roll. The remaining shots can be found on my new Word Press blog. The air was very smoky the whole trip due to multiple forest fires in Montana and the Pacific Northwest.
All images were made with my Mamiya 6 rangefinder and either 50 mm wide angle lens or the 150 mm telephoto. Due to a mistake, everything was shot at one stop over, making an effective EI of 80. Developed by Old School Photo Lab in NH.