iceberg – n. a very large piece of ice floating in the ocean

expedition – n. a journey especially by a group of people for a specific purpose (such as to explore a distant place or to do research)

hull – n. the main part of a ship or boat : the deck, sides, and bottom of a ship or boat

undisturbed – adj. not interrupted or changed in any way

reverence – n. honor or respect that is felt for or shown to (someone or something)

archaeologist – n. : an expert in a science that deals with past human life and activities by studying the bones, tools, etc., of ancient people

artifact – n. an object (such as a tool or weapon) that was made by people in the past