Dave's Pumpkin Crunch Cake 12.1.11

I work with Dave, and this is his recipe.  It's a pumpkin cake with cream cheese frosting, placed on a base of chocolate and pecans.  The pecans provide the crunch.  The recipe is a gluten free recipe, although I substituted AP flour for the gluten-free flours.

Here's a closeup of the chocolate pecan base.