The Hawaian island of Kaua'i - more specifically, the isolated Kalalau Beach (with its namesake valley just behind), which is the terminus of the notoriously tough Kalalau Trail, which runs along the Na Pali coast.
Folding Lava, Kilauea, Hawaii. Justin Reznick. I realize this is neither plant or animal life, but it's still a natural phenomena that deserves some recognition. Some of the most amazing rock formations come from cooled lava.