In large pot, combine meat, bones, water and salt. Bring to boil; skim, lower heat and simmer one hour.
Stir in corn and green plantain. Cook ½ hour.
Stir in yucca, ñame and malanga. Cook ½ hour.
Stir in sweet potatoes, pumpkin, Sazón and Sofrito. Put ripe plantains on top so they do not dissolve. Cook ½ hour or until all vegetables are tender.