The GateKeeper -The Castle In A Valley
An environment idea for The GateKeeper.
In an alien world of The Gatekeeper, there are gates (portals) that connect to one another, hidden in various locations. One of these gates is supposed to be connected to the Earth. After he gets sent to this world, the protagonist Peter travels around to find the right gate that will take him back home.
This is an idea for a castle built on a deserted valley that can only be reached using a hovercraft known as 'the flying bridge.' The portion of the castle that receives the flying bridge is revealed and serves as an entrance to the portal that lies inside the cave on the valley.