One of my goals for this project was to tread lightly on the land.
The high spot of the site was a boulder maybe 16 ft. x 8 ft. and protruding 8 ft. above grade at one end. I decided that a nice approach would be to set the structure on the boulder. I reasoned that the boulder probably extended several feet below ground and was probably not going to move much over my lifetime.
Here I laid out the structure with some 2×4s to figure out how to orient it relative to the boulder. The boulder is covered with moss and lots of wet organic stuff as is typical of this part of Vermont.