Someone had gone around.

There were tire tracks curving off the road and through the brush on one side, and rejoining the road beyond the tree.

I sat there and I hesitated.

Turning around meant hours of backtracking in the failing light.

The tracks meant someone had made it around already.

The ground looked firm enough.

I followed the tracks.

It was a mistake, and I knew it was a mistake within about four seconds of committing to it.