Manatial Del Toro is the Dominican Republic's biggest flooded cave, part 1 features the first 5000 feet of this unique cave. Including Caroli's Room the bacterial halocline, the Lizard Room, The Ice Tunnel and the start of the clay banks.
Check out the El Toro Project a film about the recent push dives to the far reaches of El Toro
youtube.com/watch?v=YhBxbQg3rAA&list=UUH9wqtJ17MZ88qi2BwI9oYw