From Shibusawa, a friend and I rode to the trail. Began the walk up to Nabewariyama. First few kms were good, with flat paved road. Eventually it turned to uneven stone, stair-climber-like path. About a km before the summit, it is pretty steep grade. Next up is Ameyama. This section of the trail was much less frequented since most people (the smart ones), went on to Tonodake directly and skipped the circle route we were taking. This trail had a lot of descent and sections with chains to help descend some more vertical sections, required a bit of rappelling skill. We descended to the valley again, losing altitude and knowing we'd have to climb back up to Tonodake. But first, 'we' ( I ) HAD to get those tiles. So we did a pretty quick trek along the river toward the other side of the tunnel that thwarted our effort a couple weeks ago. Tiles achieved. Now we doubled- back along the river bed. The trail was good so we made good time. One more detour for a tile. Not too far. We walked the stone riverbed to the dam. Had to climb a pretty dodgy jerry-rigged ladder to continue, but ‘tile achieved.’ Now, we realize it is getting rather late and Tonodake is still ahead. The trail was pretty rock-strewn and steep, so making good time was not really possible (for me). Finally, got to Tonodake at 5:00 pm. Totally misted over and in the clouds. No time to waste, so we started down. The entire descent is a descending stairway with uneven rocks carefully placed to make sure that if you go quickly you'll turn a knee or ankle. Still 4 km to go to the bikes. It's dark now. Bike lights come out. My legs are like rubber. Eventually, we reach civilization again, retrieve the bikes and are back at Shibusawa in time to catch the express back. Total, 29.9 km.... 18 km hiking. 4 new tiles. Max square 23x23