A large red structure is being assembled at Starbase's Orbital Launch Site (OLS).

Mary (@BocaChicaGal) with some great views here.

Open question per what it's for, so fire away with your guesses!https://t.co/APLl78EwQN pic.twitter.com/iatuvQTUHR

— Chris Bergin - NSF (@NASASpaceflight) October 5, 2021