The road runs ____ the desert .横线上应填across还是through?

The road runs ____ the desert .横线上应填across还是through?
The road runs ____ the desert .横线上应填across还是through?

The road runs ____ the desert .横线上应填across还是through?
across 地理上的东西驱于用这个词,但是像通过某人心灵这种环境下就用though

应该是across吧，through好像强调从内部穿过