  We briefly review the recent novel solution of General Relativity, we call
the cosmological black hole, firstly discovered in [Roupas, Z. Eur. Phys. J. C
82, 255 (2022)]. A dark energy universe and a Schwartzschild black hole are
matched on a common dual event horizon which is finitely thick due to quantum
indeterminacy. The system gets stabilized by a finite tangential pressure
applied on the dual horizon. The fluid entropy of the system at a Tolman
temperature identified with the cosmological horizon temperature is calculated
to be equal with the Bekenstein-Hawking entropy.
