Line 4 project progress Line 4-Section A-Alsos Veikou-Goudi-Project Progress October 2021-Photos 11/11/2021 / Kolonaki Station Kolonaki Station Kolonaki Station Kolonaki Station Kolonaki Station Kolonaki Station Veikou TBM Shaft Veikou TBM Shaft Veikou TBM Shaft Veikou TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Katehaki TBM Shaft Dikastiria Station Dikastiria Station Dikastiria Station Dikastiria Station Dikastiria Station Dikastiria Station Acadimia Station Acadimia Station Acadimia Station Acadimia Station Acadimia Station Acadimia Station