Abstract: A method of reclamation using tailings produced during oil sands extraction processes involves depositing tailings below grade into a pit, the tailings comprising a solids content of at least about 30 wt % with greater than about 60% of the solids being fines; placing a layer of water of sufficient depth and volume over the deposit of tailings; and allowing densification of the tailings to occur without mechanical or chemical intervention, wherein the layer of water capping the tailings deposit forms a lake habitable for plants and animals.