The First Splitted Tadpole Black Hole of the Big Bang created the first Star cluster in the center of a Circular (Tubelike) Super Cluster Structure Bubble in our universe.
Below: example of a splitting Tadpole Black Hole, forming central star clusters out of the Axion space (by the Penrose-Q-FFF Trapped space horizon) and tubelike super star/galaxy cluster bubbles in the early universe.