Preheat oven to 400 degrees F (200 degrees C). Place bones into a heavy roasting pan and add enough water to cover bottom of pan. Cover pan with a tight fitting lid and cook until browned. You may need to add more water while it is cooking so be sure to check.

In a large stock pot, combine browned boned, chilies, potatoes, tomatoes, onion, celery, cumin, chili pepper and liquid. Simmer for 5 to 6 hours.

Remove bones from soup, remove any meat, and place meat back into soup. Once vegetables are tender, serve.