Galina Baranova was not an opera singer, she was trained in the Leningrad Conservatoire, and her voice has the power and control to perform on the stage of the world's top opera houses. Her voice is that of a rare contralto profondo, with truly cavernous depths, capable of singing well below C3 in to the baritone tessitura. Apart from Gaea in Strauss' Daphne, I am not sure there are many operatic roles she could sing, unless she took on some of the tenor roles!
Check out her pages, and the video below.