LEGO 6199 Hydro Crystallisation Station is an Aquazone Hydronauts set released in 1998, containing 482 pieces and 5 minifigures. It portrays the Hydronauts’ underwater base on a raised baseplate with a hangar accessed by a button-activated mechanism. The set includes a large yellow Hydronaut submarine with twin propellers and a crystal-carrying cage, plus a small Stingray scout craft. Minifigures comprise three Hydronauts and two Stingrays, and the set adds sea creatures such as a shark, an octopus, and a manta ray, serving as the subtheme’s primary base model.
Note: This is a Bricks and Minifigs Retired set. - Retired sets are still New-in-Box (NIB), sealed, never opened and officially retired by LEGO. These sets can be rare as they are no longer in production by LEGO.
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