@futurebird I just got back from a trip to rural Texas, and took some photos of the large ant nests that are ubiquitous on our family farm. The ants are quite large and red, and move with deliberation rather than the quick movements of the fire ants that also dot the landscape. The nest is a hole surrounded by cleared ground for a couple of feet around the opening. I’ve always loved these ants growing up — they are large but not at all aggressive, and the nests are so distinctive.
I believe they are more formally known as “harvester ants”, but we just always called them “red ants”.