Turtle Cake

1 box German Chocolate cake mix
1 14 oz bag caramels
1/2 Cup evaporated milk
3/4 cup butter
2 Cups chopped walnuts/pecans
1 cup miniature chocolate chips
Prepare cake mix using package directions.
Pour half of the batter into a greased 9 x 13 baking dish. Bake at 350 for 20 minutes. Melt caramels with evaporated milk and butter in a sauce pan over low heat, stirring constantly. Pour over cake. Sprinkle with 1 cup nuts and 1 cup chocolate chips. Pour remaining batter over filling. Sprinkle with remaining 1 cup nuts. Bake at 350 for an additional 25-30 minutes.