When the Pevensey children discovered Narnia, they did so by opening the door of the wardrobe. Similarly, Alice stole her first glimpse of Wonderland after falling down the rabbit hole and peering through the keyhole. Doors and portals are frequently used to structure fantasy stories, making them useful devices for KS2 descriptive writing.
When planning to use portals with children, first work out what the portal will be, where it is located and what it looks like. As a class you should then decide where in the narrative the portal will be introduced, what is on the other side and how the portal will be used to return to the original setting.
When it comes to describing what is on the other side, most children benefit from working as a class or group to examine images of settings and brainstorming descriptive phrases about them. Once they’ve done this, they’re ready to invent their own settings.