Dune
A wind-shaped hill of sand — terrain that looks fixed and is in fact slowly moving.
A dune in a dream is the dream's image of terrain that looks fixed and is in fact slowly moving. The dune holds its shape day to day; across a year it has crossed the road. The dream brings the dune when something in your life — a public reputation, a long social arrangement, a piece of stable-looking land — is actually being shifted by ongoing pressure and is not where it was when you last took a reading. A dune climbed and crossed in time is the dream affirming the honest movement on a shifting surface. A house built directly on a moving dune, with the dune now arriving at the wall, is the dream noting that the apparent solidity was misread, and the slow drift has reached what you built.