Ecco The Dolphin Wiki

Map. Note the small spaceship in the lower left corner.

Black Clouds was a stage that was in the Vortex Spaceship in the Dark Future. It had trap doors and amoebas that were deadly obsticles.

It may have been a hangar or a dock for smaller spacecrafts as there is a little rocketship in the lower left corner of the stage.

It is unknown whether or not "Black Clouds" was an actual space cruiser in orbit around Earth or if it was a floating "City" or a very tall tower.

The level serves as a sanction for Dark Vortex Future oddities and dangers such as Amoeboids, the Anti-Gravity Sphere, and Exploding Fungus.