Patapsco Valley State Park
All of my observations from this area today:
https://www.inaturalist.org/observations?on=2023-06-20&place_id=any&user_id=joemdo
Thanks to Oliver Yung at BugGuide.net for confirming my ID: https://bugguide.net/node/view/2374737#3800088
These ants seem to be moving to a new nest at the base of this standing dead tree trunk. Some winged adults were present. Workers were carrying eggs and various stored provisions like this large insect wing.
They're going crazy