Input (grade 13): Marie Byrd Land hosted the Operation Deep Freeze base Byrd Station (NBY; originally at 80 Â S, 120 Â W, rebuilt at 80 Â S, 119 Â W), beginning in 1957, in the hinterland of Bakutis Coast.
Output (grade 5): Marie Byrd Land hosted the Operation Deep Freeze base Byrd Station (NBY; 80 Â S, 119 Â W). This began in 1957, in the hinterland of Bakutis Coast.