This was a repeat shot of an earlier shot I took on Kodachrome of a tunnel I shot in the Grand Canyon on my December 2010 Kodachrome adventure. The K64 shot was almost un-viewable because at the time I didn't understand about reciprocity failure and only shot for 2 minutes. This time it was 10. Luckily I had my GF on the other end of the cave warning people, it was very dark and they surely would have run into it, I couldn't be there with my camera because as I learned last time, this causes a shadow figure to appear :)
Side Note: the US Postal Service is completely unreliable and none of my shipped film made it to the post office before I had to descend, so I had limited film, and when I got to this spot, I only had an open expired roll of Ektachrome EPT, the blue stuff for tungsten lights I believe, anyway the rock was really a red clay color, I guess I'll just have to go back AGAIN to get the shot perfect.