(aka the Underworld renovation project) Underworld [https://www.underworldcode.org/] is our parallel, particle-in-cell, finite element geodynamics code [1]. For the past year or so, the Underworld team [http://www.facebook.com/underworldcode] has been working on a refurbished user interface. We've known for a long time that it needed to be done but we finally bit the bullet.

In a recent paper [1], we used Underworld models to examine subduction congestion associated with the ingestion of a continental ribbon. The SE Australian geological record turned out to be a wonderful place to study this process. Here is a short summary of the work for a relatively non-technical audience that we put together and some additional figures which I prepared.