The reason these photos were so interesting is that RM happened to be working the manure heap on a chilly afternoon and I happened to glance over and catch just how much steam was pouring off the recently turned pile. When the manure pile was described as "cooking," I had no idea how much heat was actually being generated. In fact, RM had asked me to pile old hay in a separate pile as my current habit of tossing old hay in with the manure was a recipe for burning the place down (my words, not hers). It gets that hot.
Here are some photos of RM turning over the manure pile. Click photos for larger views and captions.