The underground world here, the number-one tourist attraction of Barbados, is viewed from aboard an electric tram and trailer. You'll see bubbling streams, tumbling cascades, and subtly lit deep pools, while all around stalactites hang overhead like icicles, and stalagmites rise from the floor. Visitors may disembark and get a closer look at this natural phenomenon at the Rotunda Room and the Cascade Pool. Although it's interesting, it may not impress those who have been to the far more spectacular Carlsbad or Luray caverns back in the United States.