Our cranium and vertebral column are connected through a paired bony structure present on the inferior surface of the skull called the occipital condyles. Their anatomical variations are important to clinicians and surgeons planning interventions around craniovertebral junction. Our study report a large tubercle (third occipital condyle) at the anterior margin of foramen magnum in a adult skull which presented an articular antero-posterior facet on the inferior surface and foramen with canal extending from anterior to posterior surface. Its evolution, morphology, and development have been discussed in background of available literature.