A thermally insulated container is disclosed for maintaining thermo energy of an object. A first anchor is pivotably secured to the container and pivots to a position below the container for engaging a soil layer and preventing rotation of the container relative to a ground surface. A first locking arm extends between the container and the first anchor for locking the first anchor relative to the container. A second anchor is pivotably secured to the container and pivots to a position below the container for engaging a soil layer and preventing rotation of the container relative to the ground surface. A second locking arm extends between the container and the second anchor for locking the second anchor relative to the container.