"Drazha is right," you say. "We have not come this far on our journey to deviate now. Let us continue north and deal with the hazards as they come."
As the caravan moves north, the blizzard continues to intensify, and progress becomes ever slower and more difficult. After an hour's trekking, though, a structure becomes visible through the falling snow: a ruinous tower and surrounding wall, sitting atop a small hillock.
As you look at the tower's crumbling stonework, you imagine how it must once have been—a bastion against both the elements and…you realize that you've not seen anyone other than your own tribespeople since your encounter with the crofter, and that was before you reached the tundra proper. Whoever built this tower, and whoever it was intended to repel, are likely long gone. As you ponder this, Drazha moves her horse closer to you.
"What are we waiting for?" she says. "This is perfect. It's a ruin, but we can camp within the walls."