It turned out, he spent in the ocean much longer than expected by scientists.
Initially, the experts of the space Agency thought that the dining iceberg unusually rectangular shape broke off from the ice shelf recently — in September-October of 2018. It was noticed during aerial surveys of polar ice, Operation IceBridge.
However, satellite images have told a much more interesting story of the monolith. Experts have traced the origin of the iceberg using satellites of the ESA Landsat-8 and Sentinel-1. It turned out that a perfect rectangle is separated from the ice shelf Larsen C in early November of 2017, almost immediately after the giant iceberg A-68.