Er...ah...well archaeologists are calling it an "altar" but we chefs know better now don't we? It was more likely a restaurant kitchen, where cooks made food for customers who never materialized. (Or is that immaterial customers?) I suppose this is why it was abandon. I mean who wants to eat right on top of a fault zone?
This restaurant probably predates the development of the axiom "The three most important things to consider before opening any business are location, location, location."
An Altar Beyond Olympus for a Deity Predating Zeus