underground

METRO
List of words for the clue underground from the crossword:
ORE SEWER ROOT ORES CATACOMB TUBE SILO ROOTS MOLE SEWERS MINER MINE CAVE SUBWAY RIVER MAGMA LOU DUNGEON CRYPT
WordClue
SUBWAYmetro
TUNNELunderground passage
WORKundercover or literary
TUNNELunderground or underwater passage