Grand Canyon Day 6, Part 3: Ah, Sweet Toxic Fumes

5:30 p.m. Time for a 25 minute pause while a freight train crossed our path. Or maybe it was 5 minutes and just seemed like 5 to weary travelers. Nope, it was 25. Right by the ExxonMobil "pollution plant" (i.e. oil refinery) near Joliet. But after last night's sewage stenchfest, this was a rose garden.