Gros Morne has three dominant features: Bonne Bay, Gros Morne mountain, and the Tablelands. We had expected epic fjords and rocky forested mountains - but we hadn't expected the Tablelands. In the middle of green and damp Newfoundland, the Tablelands looked like a chunk of Arizona or perhaps even Mars. It turns out that this is because the Tablelands are a piece of the earth's mantle that was shoved up to the surface by plate tectonics. It's heavy in iron, so it's rust-red like the surface of Mars. It's also low in nitrogen and other plant-friendly nutrients, so the plant...