We report on the activities related to the 1 IAG Subcommission 1.3f "Regional Reference Frame 2 for Antarctica". Campaign-style GPS observations have 3 been carried out since 1995. Based on the Bernese GNSS 4 Software the latest analysis yields results for about 30 5 stations aligned to the terrestrial reference frame solu-6 tion IGS08. The obtained station motions are discussed 7 in the context of plate kinematics and glacial-isostatic 8 adjustment. It is demonstrated that the activities are 9 a valuable contribution both to the ITRF densification 10 in Antarctica and to geodynamic research.