 However, at the time of its establishment, the Soviets had already operated six drifting iceberg stations of this kind.In April 1958, several large cracks were observed around the ALPHA, and the station was forced to relocate itself 2 km away from its original location.In August 1958, after the US Submarine made a visit to the station ALPHA, the surrounding ice ground began cracking and ridging again, so the station was finally abandoned in November 1958.