The diagonal tunnel finally reached the stub tunnel at the bottom of Lake Yamamoto a couple of weeks ago. The stub was filled with water that had seeped past the concrete plug during the months since it had been put into place, and so when the two tunnels were finally joined, several tons of water ran down the diagonal into Golgotha. This was expected and planned for; all of it went into a sump and drained from there into the Tojo River. Now it is possible to go all the way up the diagonal and look at the concrete plug from the underside. Lake Yamamoto is on the other side. Goto Dengo goes up there every couple of days, ostensibly to check the plug and its demolition charges, but really to check on the progress being made, unbeknownst to Captain Noda, by Wing’s and Rodolfo’s crews. They are mostly drilling upwards, making more of those short, vertical, dead-end shafts, and enlarging the chambers at their tops. The system (including the new "ventilation shafts" ordered by The General, and dug from the top down just to the east of the ridgeline) looks like this now: