15_the_circle | more sideways stratigraphy

this activity doesn't appear on the Things To Do list below. knowing that the side walls have more TIG beadboard, I found that the temptation to open up the N wall from the inside to get a look had become irresistible.

behind the wallboard, the styrofoam layer appeared as expected. the beadboard behind it needs some TLC. it has some gaps and even a section that's a completely different colour. by insulating the N wall from the inside it will be possible for the interior to get some needed attention and for the exterior to remain undisturbed.

the worklight created an inadvertent shadow effect

this evening's lateral excavation opened up about half of the N wall.

one interesting element to emerge was an HVAC register, abandoned in place and immured by styrofoam and wallboard. further investigation will be called for to determine whether it's connected to anything.