I started working with Worldographer to flesh out the town the characters are exploring.
Before the town was abandoned, it was home to 2,500-3,000 people.
The characters have explored all of the buildings around the fountain and tree. The three structures along the northern east-west road are 2 homes and a tailor's shop. The tailor's shop is interesting as the owner had a setup to dye cloth.
The Party spotted horses and sheep around the barn just across the way. From the barn, they recovered a couple of large lanterns. The well in the northwest corner is in good working order and doesn't taste brackish like the fountain. The remaining buildings in this section are homes, which the Party skipped over.
To the south, the Party bypassed the mansion. Every time they enter, the ants appear. I didn't place a ruined structure on the map yet. The roof is intact and that is just one more dimension for the ants to use in an ambush. The Party briefly consider burning it down but restrain itself.
Directly across the street from the mansion is a blacksmith shop with nice a wagon out front. Inside the shop, they discover iron and silver ingots in addition to many weapons and tools. The Party returns to the general store to recover their supplies and bedding from the apartment. The blacksmith shop has an open floorplan which suits the Party's needs better than the shop. As the sun sets, the group takes some time to bring water from the well to their new indoor campsite.
I might have time to explore more tomorrow.