I've begun to build up the raised areas of the town, cover over the garages, and add the various sets of steps to the upper level. All of this work is being done with 3mm foamcard.
The white square at the top of the first photo shows the site of one of the building bases.
A closeup of one of the sets of steps, with some 28mm converted Eureka minis for scale purposes.
Have also begun to add some more to the slopes at the "top end" of the Arica map. All of this will eventually be smoothed out with filler. Lots more to be done!