A geologic tour of the Hawaiian Islands: Kaua‘i and Ni‘ihau

In this shaded relief and bathymetric map of Ni‘ihau and Kaua‘i, colors indicate water depth, from shallow (orange and yellow) to deep (purple), with shades of gray indicating island areas above sea level. From: U.S. Geological Survey Geologic Investigations Series Map I-2809, "Hawai‘i's Volcanoes Revealed" (available online at http://pubs.usgs.gov/imap/2809/).