OAHU, HAWAII: Oahu is no longer an active volcano and is now eroding. Yet there is evidence just offshore of past activity, such as the Nu'uanu landslide, caused by a steam explosion of unimaginable size.
The Arabia was a 19th Century steamboat built with a shallow flat hull that enabled it to work on both the Mississippi River and the shallower Missouri River. It sank on the Missouri River in September 1856 and was rediscovered and excavated in 1988. (National Geographic)
Komsomolets Wreck: Visualization of the drained wreck of Soviet nuclear submarine Komsomolets on the sea bed as revealed during the drain. Wreck surveyed in 2019. (National Geographic)
Komsomolets Wreck: Visualization of the drained wreck of Soviet nuclear submarine Komsomolets and surrounding debris field on the seabed. Wreck surveyed in 2019. (National Geographic)
Dr. Melissa Connor and Dr. Douglas Scott both look at original footage from their filmed excavation from the Battle of the Little Bighorn in the mid-1980s. (National Geographic)
The excavation site of the Steamboat Arabia in a Kansas cornfield. The Arabia sank in September 1856 on the Missouri River and was rediscovered and excavated in 1988. (National Geographic)
(Left to right) SEARCH's Dede Marx in the water, and NOAA's Robert Schwemmer peering over the edge of a dingy - scoping out the dive site of the wreck of the Winfield Scott. NOAA Captain, Zac Montgomery and Mark Molesworth (cameraman) in the dingy looking on. (National Geographic/Rosie Woodcock)
Globe of planet earth. The East Coast of the United States is in darkness, while the West Coast is transitioning into the night and the Pacific Ocean is still in day.