What is this monstrous thing?

its a torta de la central.
In other words, its an enormous sandwich my boyfriend bought at the bus station (central) this mornig at 4 am after a night at the bar. He only ate half of it, and said I could have the other half. I asked him what it had on it, and he said he didnt know, but that it was called a niña rica. I disected it this morning and found that it contains in no particular order:

1. mayo
2. milanesa- a breaded, fried meat fillet
3. avocado
4. sachicha- hot dogs
5. some other kind of thin red meat that tasted a little like pepperoni...
6. queso oaxaca
7. onions
8. tomato

I took a bite of it (minus the hot dogs and mayo...eww) and was surprised that it was delicious. One bite turned into another and another until I had finished the darn thing. :\