These are Aberdeen's quiescent lions. They will sleep eternally within the rocks - existing only ever as potential lions.
Originally intended as heraldic gatekeepers to the George VI bridge linking Ferryhill and Kincorth, their birth from the rock was still, interrupted by the Second World War. After the war, the will and means was never mustered to complete their sculpting.
The fourth dormant lion now roars silently as the Ertchie 'Petch' Simpson memorial in Bon Accord Square. The three seen above are in Hazlehead Park's Sculpture Garden. Along with this orphaned plinth which has never seen the statue which it was to host: