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.
Kauai maps - Top Notch sights and Attractions - Kauai is the most beautiful Hawaiian island. It is the Nature island. If you want to tour Kauai it starts with a Kauai Map. But to see all the wonderful attractions you need to dig a little deeper.