The Mountain Village
A village high in the mountains relied on a single path to the valley below.
From the valley came salt. From salt came preserved meat. From preserved meat came winter survival.
One year, a rockslide blocked the path for three months.
The village didn't starve from lack of food. They starved from lack of salt, which meant they couldn't preserve the food they had.
A traveler asked why they hadn't stored more salt.
"We stored plenty of grain," they said. They hadn't thought to map what grain depended on.