Anomalous point of the planet “Center of the Universe”

In the American city of Tulsa, there is a unique place, with one unexplained acoustic feature, over the solution of which they have been struggling for more than one year. While no one could explain the reasons for the strange effect.
The small town of Tulsa, in the state of Oklahoma, is not only a venue for a famous music festival, but also a unique acoustic venue. It is called “Center of the Universe” (Center of the Universe).
The place is a concrete circle, laid out on top of bricks in thirteen rows. If you become in the center of the circle, then any sound you publish will intensify at times. Moreover, the echo of your voice will become loud too. At the same time, standing next to, outside the circle people, will not hear anything unusual.