Q3: What is the triangular area we headed toward in an attempt to evacuate?

 It’s right next to the river.

It’s at the foot of the Shin-Kitakami Bridge—in other words, next to the river. Although it’s a few meters higher than the school, it’s not on high ground. It’s not a place where you can escape a tsunami.

If they had left earlier, they could have evacuated through this area toward the Kamaya Tunnel, but they didn’t start moving from the schoolyard until the massive tsunami was already closing in and water was spilling over from the river and ditches. Although they had senior students leading the way, there was no time to line up properly; the line was disorganized, and students from different grades were mixed together. The march took about one minute. They went out of their way to take a narrow path behind private homes (which was a dead end) and were heading toward the river even as the tsunami was approaching. The children were driven into the narrowest spot, where the mountainside was also steep. The distance traveled from the schoolyard was about 150 meters for the child at the front of the line.

When leaving the schoolyard, they squeezed through a gap in the fence that was just over 70 cm wide. In other words, they moved in a single line.