Metro, the River Styx

I see them every day. The travelers, descending from the sunlight to the subterranean world of the metro. Although crowded with commuters, the metro is a realm of shadow and solitude. I watch them every day. The travelers, crossing a boundary of shadows, seem to be waiting, suspended in transit between here and an unspoken destination... between now and some hereafter. I imagine the River Styx. The train with ferryman Charon transporting souls of travelers who upon reaching their destination, gratefully and hurriedly return to the surface and the light of day.