The structure is pyramidal, and the vertex coincides with Mary's head. The statue widens progressively down the drapery of Mary's dress, to the base, the rock of Golgotha. The figures are quite out of proportion, owing to the difficulty of depicting a fully-grown man cradled full-length in a woman's lap. Much of Mary's body is concealed by her monumental drapery, and the relationship of the figures appears quite natural. Michelangelo's interpretation of the Pietà was far different from those previously created by other artists, as he sculpted a young and beautiful Mary rather than an older woman around 50 years of age