"Contrary to intuition, the speed of light (properly defined) DECREASES as the black hole is approached." http://www.physlink.com/Education/AskExperts/ae13.cfm

This prediction of Einstein's general relativity is actually a fudge factor reconciling the nonexistent gravitational time dilation fabricated by Einstein in 1911 and the gravitational redshift predicted by Newton's theory. Gravitational time dilation and gravitational redshift are only compatible if the speed of light falling in gravity absurdly DECREASES (the acceleration of falling photons is NEGATIVE, -2g near Earth's surface):

Relativity 3 - gravity and light https://www.youtube.com/watch?v=FJ2SVPahBzg

"...you will find in section 3 of that paper Einstein's derivation of the variable speed of light in a gravitational potential, eqn (3). The result is: c'=c0(1+φ/c^2) where φ is the gravitational potential relative to the point where the speed of light c0 is measured. Simply put: Light appears to travel slower in stronger gravitational fields (near bigger mass).. [...] You can find a more sophisticated derivation later by Einstein (1955) from the full theory of general relativity in the weak field approximation. [...] Namely the 1955 approximation shows a variation in km/sec twice as much as first predicted in 1911." http://www.speed-light.info/speed_of_light_variable.htm

"Thus, as φ becomes increasingly negative (i.e., as the magnitude of the potential increases), the radial "speed of light" c_r defined in terms of the Schwarzschild parameters t and r is reduced to less than the nominal value of c." https://www.mathpages.com/rr/s6-01/6-01.htm

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