Well the greenhouse is functional, cost less than $600. plants seem to thrive, mostly because of SWMBO's green thumb. The greenhouse needs a door handle, a few pcs of outside trim and insulating and planking on the inside where there are no windows. The rock wall is working exactly as hoped for, warms up during the day and warms the gh overnight.
If I was building it again, I would make the rock wall 12' long and the south wall 8' away, this would increase the effect of the rock wall, and make the roof line a bit steeper.
greenhouse2
This will be the last post I make on the thread unless some information comes to light that should be shared, or if there are questions.
Sorry about the slide show, but for some reason cannot get images into my post. If any one wants to take the time to bring the pictures over, please do.