Greycliff Portal
From Craftland Minecraft Aether Server
A Greycliff Portal is a manufactured structure which acts as a gateway between the New World and Greycliff dimensions in Craftland. It is built as a frame of Mossy Holystone, four blocks wide, by five blocks tall, after which the inside of the frame is ignited to activate it. The corners of the frame are not required, but portals created by the game will always include them.