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Caves By Tony Camarena Primary caves • Some caves formed at the same time as the rock that surrounds it • Typical primary caves are lava tubes, blister caves, tufa caves and reef caves • If the liquid lava inside the crust flows out, a hollow tube remains which is the lava tube • Lava tubes are formed by volcanic activity ( most common primary caves ) • Kazumura cave is the longest and deepest lava tube in the world ( located in Hawaii ) Primary caves Sea caves • Found along coast around the world • Also known as, Littoral cave ,are formed by waves • Generally around 5 meters to 50 meters in length but may exceed 300 meters • Some wave-cut caves are above see level like Thailand's Phang Nga Bay • May find a variety of rocks, ranging from sedimentary to metamorphic to igneous Sea caves Glacier caves • Occur in ice and under glaciers and are formed by melting • Also made by very slow flow of ice that then melts • Found all over the world • Dynamic and change from year to year • Also called ice caves but properly used to describe bedrock caves that contain ice threw out the whole year Glacier caves
