(Kelly of the Clue Crew reports from inside Carlsbad Caverns Nat'l Park, New Mexico.)  Calcite formations called soda straws are precursors to these larger formations that grow from cave ceilings
What term refers to the 
formations that grow downward... [DOC] [TLE] the to of a I and is in that it for you on be have are - eridanus.cz [PAR] ... these does