UNDERWATER CAVE

probe explore

contours outlines, shape

rebreather apparatus that removes the carbon dioxide from a diver´s breath

shaft a vertical passageway or hole

currently at the present time

descended went down

debris scattered remains, rubble

cave-in a sudden collapse of a roof

probe (noun) an instrument used for measuring

verify prove something to be true

carbon dioxide gas produced when you breathe out

footage recorded film material

conduct transmit, carry

decompress restore normal air pressure

saturated completely full

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