The Eternals battle each other at a volcano in the Indian Ocean as the “seed” starts to hatch with the Celestial Tiamut ... allows Sersi to turn Tiamut to stone, leaving a colossal statue ...

By making Celestial Island a key location in Captain America: Brave New World, Marvel has illustrated it hasn’t completely discarded Eternals and its contributions to the franchise.

But, Captain America: Brave New World did continue a plot thread from Eternals, with much of the story revolving around the giant Celestial in the ocean and the discovery of adamantium.