Mount St. Helens is an active strato-volcano in Skamania County, Washington, in the Pacific Northwest region of the United States. It is well known for its ash explosions and pyroclastic flows.Mt. Vesuvius is a somma-stratovolcano located in Naples, Italy. It is universally acknowledged to be an extremely dangerous volcano.Mount Krakatoa is a Caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung.
Mertz Glacier is located in the continent of Antarctica. It is about 45 miles long, heavily crevassed glacier in George V Coast of East Antarctica. The extension of this glacier into the Southern Ocean is called the Mertz Glacial Tongue.
The Andros Barrier Reef in the Bahamas is situated into the Tongue of the Ocean. The Tongue of the Ocean is the region of much deeper water in the Bahamas.
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