Today we followed a trench of loose material next to the 20th century wall. The working theory is that this was something that was dug and filled by Garstang's workers, but that's not necessarily the case. You might notice that the triangular area we haven't dug sort of slopes downward into the trench with that bucket and stick in it.
This isn't poor field technique on my part! It seems that the trench that we're digging slopes inward, and we've been following the difference in the materials. Which is, more or less, the way features like that are supposed to be excavated.
Tomorrow, the plan is to finish up that trench -- there's a bit more dirt to take out, and then I'd like to flatten that area out so that everything we've dug will be approximately the same level, and then we crack that wedge of material that we've been avoiding.
And so on, all the way down. More or less -- it seems likely that we'll eventually find floors and walls and so on, which will make digging less orderly, but until then, the lines we've been following seem likely to be the lines that we're going to continue following.