Today began making steps outside of NT01B - couldn't get in and out anymore. The material from the stairs was not assigned a locus, but all the stuff is in one bag labeled "stairs" in case it produces anything interesting. Began a new trench today - NT01C -- it is a 3x5 to the west of B -- Ruben wants to find the end of Wall B4. Didn't do much - removed topsoil and tried to level b/c relatively steep slope here. In B17, north of Wall B20, we continue to go down. Ruben wants to take this down to the same elevation as the floor in A (which is at the bottom of A9). Found a beam in B17 -- very crumbly, so nothing for dendro. Oriented almost exactly east-west.