In the photo, Willy Willow is inspecting our work today.
5 feet of 8" wall, a foot high (roughly 1.7m long, 20cm wide, 30cm high).
So how long did it take? First of all, regular cob would be challenged to build that high in a full day. What'd you guess, half day, a few hours, 2 hours? How about 30 minutes max. An hour total, when I add in digging the material, wheelbarrowing two loads 100m each time.
Let's hope we don't discover something even faster...Super-Duper Fast Cob?!